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2018 Surabaya bombings
	; SMTB GKI GPPS Wonocolo Mapolrestabes Surabaya 2018 Surabaya bombings (Surabaya) Location of the attacked churches, police headquarters in Surabaya, and Wonocolo apartment in Sidoarjo
Location	Surabaya and Sidoarjo, Indonesia
Coordinates	7°17′20″S 112°45′37″E 7°16′54″S 112°43′57″E 7°15′50″S 112°43′33″E 7°20′56″S 112°41′50″E 7°14′20″S 112°44′12″E
Date	13–14 May 2018; 13 May attacks: 06:30 – 07:53 WIB (UTC+07:00) (Surabaya churches); 20:30 – 21:20 WIB (UTC+07:00) (Sidoarjo); 14 May attack: 08:50 WIB (UTC+07:00) (Police HQ);
Target	3 churches; 1 apartment complex; 1 police headquarters
Attack type	Suicide bombings
Deaths	25 (12 victims, 13 attackers)
Non-fatal injuries	55
Perpetrators	Jamaah Ansharut Daulah, Southeast Asian branch of Islamic State of Iraq and the Levant

The 2018 Surabaya bombings were a series of terrorist attacks that initially occurred on 13 May 2018 in three churches in Surabaya, the second largest city in Indonesia. The explosions took place at Immaculate Saint Mary Catholic Church (Gereja Katolik Santa Maria Tak Bercela, SMTB) on Ngagel Madya Street, Indonesia Christian Church (Gereja Kristen Indonesia, GKI) on Diponegoro Street, and Surabaya Central Pentecost Church (Gereja Pantekosta Pusat Surabaya, GPPS) on Arjuno Street. The first explosion took place at the SMTB Church; the second and third explosions followed within an hour.

The fourth bombing occurred in an apartment complex in Sidoarjo, a regency located south of Surabaya. The explosion happened when the terrorists accidentally set off the bombs inside the room, killing 3 of them and injuring two children and a teenager. The fifth bombing occurred on the next day at the Surabaya Police Headquarters (Mapolrestabes Surabaya). Two perpetrators detonated their devices while they were being checked by the police at the entrance.

As of 14 May 2018 noon, 25 people were killed including the suicide bombers. Around 50 others were injured in the bombings; several of the injured were in critical condition. The attacks occurred just days after the standoff at Mako Brimob in Depok, in which 5 police officers were killed. The attacks are the deadliest terror attack in Indonesia since the Bali bombings in 2002. According to official investigations, the suicide bombers were a family who received training in Syria.

The bombings were regarded as one of the most sophisticated and complex terror attacks in Indonesia. It was also the first of its kind in Indonesian history, in which children as young as 9-years-old participated in the attacks.

Background[edit]

It was estimated in 2017 that hundreds of Indonesians went to Syria or Iraq to fight for ISIL before returning to Indonesia.^[6] The returning individuals are placed through a deradicalization program by the National Agency for Combating Terrorism, and are put on a watchlist for the agency and local governments alike.^[7] Several terrorist attacks, such as the Thamrin attacks, were orchestrated by the returnees or local extremists who pledged alliance to ISIL.^[8]

In 2016, President Joko Widodo requested lawmakers to revise the country's anti-terrorism laws, which were published in 2003 and 2013. He questioned the law's effectiveness, with the government legally being unable to arrest perpetrators of the Thamrin attacks preemptively.^[9] The revision encountered resistance, with critics remarking that the law would allow arbitrary arrests.^[10] Later on, opposition arose from human rights groups due to the involvement of the Indonesian National Armed Forces in the bill, which would put the armed forces in a law enforcement role.^[11] Regardless, the bill continued to press on although it was put on hold in late February as both the military involvement and the legal definition of terrorism came into debate.^[12]

Between 8 and 10 May 2018, a standoff occurred at the Mobile Brigade Corps' headquarters in Depok, resulting in the deaths of 5 police officers. While the incident and hostage situation ended with the 155 rioters surrendering,^[13] in the aftermath of the event police shot dead four individuals who were suspected terrorists allegedly travelling "to help the rioting prisoners".^[14] ISIL claimed responsibility for the incident.^[15]

Attacks[edit]

First bombing[edit]

The first attack occurred on 06:30 WIB (UTC+07:00) in front of the SMTB Church.^[16] Eyewitnesses stated that the attack occurred shortly after the first mass. Survivors stated that the perpetrators immediately entered the church without taking the parking ticket first.^[17] As people gathered in the hall, several people stated that they saw two people riding a motorcycle were being stopped by a security officer named Aloysius Bayu Rendra Wardhana^[18] at the church's entrance. Shortly afterwards, the perpetrators detonated the bomb. The blast immediately killed a child and the security officer.^[19]

The first attack was captured on camera.^[20] In the first video, the perpetrators who were riding a motorcycle immediately entered the church without stopping. Immediately after that, they detonated the bomb. The second video showed the bombing from a front door near the entrance. At the time, people were walking out from the church and several others were entering the church as the first mass had finished. The perpetrators immediately detonated their devices as they were stopped by security. As the explosion happened, multiple people inside the church began to panic. Several people who lived nearby mistook the explosion as an earthquake. The church's windows were blown. However, the exterior suffered minimal damage. The building located in the entrance was destroyed. Authorities reported that 5 people and 2 perpetrators were killed in the first attack.^[21]

Second bombing[edit]

The second attack occurred around 07:45 at the GKI, located on Diponegoro Street.^[1] Eyewitnesses stated that the perpetrators was a woman wearing black veil and black niqāb. She was also carrying two bags. At the time of the incident, she was taking her two children, who were also wearing veils and niqābs.^[22] Eyewitnesses stated that the woman was trying to enter the church when a security officer named Yesaya Bayang^[23] suddenly blocked her. She then hugged the security officer and detonated the bomb. Not long after that, her children detonated their explosive devices. Explosions were heard as many as five times.^[24] The security guard who tried to stop them was critically injured by the blast. No civilians were killed in the second attack however three perpetrators were killed. ^[25]

Third bombing[edit]

The third attack occurred at the GPPS, located on Arjuno Street on 07:53 WIB. At least two explosions were heard in the third attack, both were caused by the detonation of two explosive devices. The first explosion originated from a car. According to eyewitness, the driver of the car rammed the gate of the entrance and struck the parked vehicles in the church. At the time, people were going to drive their vehicles out from the church's parking lot.^[26] The explosion destroyed 5 cars and 30 motorcycles. Two people were killed in the attack, both succumbed to their injuries. Many were injured in the attack. Several of them were seriously wounded. Another bomb exploded from the same car.^[27] Two other bombs were discovered near the church. A bomb disposal unit was dispatched to defuse the bombs. According to them, two bombs were successfully detonated while the other two malfunctioned. Authorities stated that 7 civilians and 1 perpetrator were killed in the third attack.^[28]

Emergency services arrived approximately two minutes after the first attack. The East Java Regional Police stated that 25 are dead and 43 people were injured, several of them were in critical condition.^[29] The police immediately cleared and cordoned the area.^[30]

Fourth bombing[edit]

Around 20:00 WIB, a bomb exploded at the Wonocolo apartment complex in the nearby city of Sidoarjo.^[31] The incident occurred when the police raided the apartment. Three adults in a single apartment room were killed, while three children occupying the same room survived. All of them were from the same family.^[32] According to the regional police chief Inspector General Machfud Arifin, the victims of the blast might have planned to conduct a similar attack as the churches, but the bomb exploded prematurely.^[33]

Nearby residents stated that they thought the explosion was caused by exploding liquid petroleum gas. Residents who lived in or nearby the apartment complex were evacuated from the vicinity. The police later added that residents were prohibited to return to their homes until further notice.^[34] Police later cordoned the area for investigation and roads nearby were closed. Accounts from eyewitnesses revealed that there were two eleven-year-old children who were severely injured in the blast. They were immediately evacuated.^[34] At least five explosions were heard.^[35]

Fifth bombing[edit]

On 14 May, multiple suicide bombings occurred at the Surabaya Police headquarters (Mapolrestabes Surabaya) on 08:50 WIB. The East Java Regional Police stated that two bombers detonated their devices at the checkpoint of the police headquarters.^[36] The police stated that 10 people, 4 policemen and 6 civilians, were wounded in the attack. Four suicide bombers were killed.^[3]^[37]

The attack, which occurred at the entrance of the police HQ, was captured on camera. The video showed a car entering the checkpoint when suddenly four people, who were riding two motorcycles, entered the area. The video revealed that the motorcycles were halted by a group of policemen. The perpetrators then suddenly detonated their explosive devices. In the video, one of the perpetrators was a woman.^[38]

In the aftermath of the attack, a child aged between 6 and 7 years, whom the police suspected as being the perpetrators' daughter, was brought to the police station to participate in the attack, was found walking, confused and screaming, amidst the bodies. Authorities confirmed that she was in critical condition.^[39]

Police immediately closed nearby roads. Every business and shopowner were ordered to close their store in the vicinity of the area. All kinds of service in the police HQ were temporarily terminated in response to the attack.^[40]

Casualties[edit]

As of 14 May, 12 civilians and 13 suicide bombers were killed in the attacks.^[41] Among the dead were children aged 11 and 8 which were identified as Evan and Nathan and two security officers who were trying to stop the perpetrators from entering the church. According to officials, a pregnant woman was among the injured.^[42]Aloysius Bayu Rendra Wardhana and Yesaya Bayang, both security officers, was regarded as a hero by locals for successfully stopping the perpetrators from entering SMTB and GKI Diponegoro, respectively.^[18]^[23]

Injured victims of the blasts were treated in 8 hospitals.^[43] The local branch of the Indonesian Red Cross reported an upsurge in blood donations, with 600 people donating blood that day compared to the routine target of 400.^[44]

Investigation[edit]

Hours after the attacks, the Chief of the Indonesian National Police Tito Karnavian, stated in a news conference that Jamaah Ansharut Daulah, a local branch of the Islamic State, was the group who was responsible for perpetrating the attacks. The group was responsible for the previous church bombing in Samarinda and was also blamed for a series of attacks against the Indonesian police in 2016 and 2017.^[45]

He later added that based on eyewitness accounts, the attackers were probably from the same family. Multiple people claimed that prior to the attack the woman and her two daughters, aged 12 and 9, in the second attack were dropped off from an SUV. According to him, the man who drove the SUV was her husband. He then drove the SUV and rammed it into the GPPS, where the third attack occurred. Their sons were the ones who drove the motorcycle in the first attack.^[46]

According to official report, the perpetrators had just got back from "education" in Syria. The family, according to Tito, was among the 500 people who were monitored by the government.^[47]

Australian counter-terrorism expert Professor Greg Barton of Deakin University stated that the perpetrators are 'self-contained', deliberately cut off every communication with the other members via digital communications to avoid detection from the police. According to him, this was similar to the November 2015 Paris attacks. He later added that the weak anti-terror law in Indonesia caused terrorists in Indonesia to travel to Iraq and Syria with ease, and that those who might have been involved with the Islamic State wouldn't be punished by the authorities. There was also considerable concern on the use of children in terror attacks.^[48]

Motive[edit]

Indonesian National Police revealed that the attacks were directly ordered by ISIS. Authorities later added that the attacks were conducted in response to the imprisonment of Aman Abdurrahman, the leader of JAD and JAT in Indonesia. The attacks were acts of revenge for the imprisonment.^[49]

Aman Abdurrahman should've been released from jail on August 2017. However, he was later arrested again by the police as he was alleged to have supplied weapons and funds for the terrorists who executed the terror attack in Jakarta in 2016. At the time, he was serving his time in prison for his role in conducting training for terrorists in Aceh.^[49]

In response to his imprisonment, the leadership in JAD was handed to Zainal Anshori. However, Zainal Anshori was immediately arrested after authorities stated that he was involved in weapon smuggling in Southern Philippines. This reportedly infuriated the members of the JAD and JAT. In response, the members of the JAD and the JAT started to attack civilians and police officers. The first major attack was the 2018 Mako Brimob standoff, days before the Surabaya bombings.^[50]

Raids and arrests[edit]

Hours after the incident in Wonocolo, Indonesian police raided a house in Masanganwetan, Sukodono, Sidoarjo. During the raid, a shootout erupted between a suspected terrorist and the police.^[51] The terrorist was later shot and killed. He was identified as Budi Satrio. 2 men and 2 women were found on the site and were arrested. The police stated that pipe bombs were found on the site. Several ambulances were dispatched to the area.^[52]^[53] Another 3 suspects were arrested in Surabaya, with the police officials claiming that the suspects had planned for further attacks although the locations were not disclosed. In total, the raids in Sidoarjo and Surabaya killed 2 suspects and arrested 7.^[54]

Further arrests were done by Detachment 88 in Bekasi,^[55] Sukabumi^[56] and Cianjur. In the Cianjur raid, four suspected terrorists were killed after a shootout in a bus terminal. They had carried explosive, bomb-tipped arrows and allegedly planned to attack the Brimob headquarters.^[57] According to the police, as many as eight raids were conducted throughout Indonesia. They added that 2 terrorists were killed due to resisting arrest.^[58]

Perpetrators[edit]

Indonesian National Police alongside with the East Java Regional Police confirmed that three families were responsible for the bombings in Surabaya and Sidoarjo.^[59]

Through its Amaq News Agency, the Islamic State in Iraq and the Levant claimed responsibility for the attacks, although it did not provide any evidence of its participation.^[60]

Dita Uprianto family[edit]

The church bombers were identified by the police as a family of six, consisting of Dita Uprianto (father), Puji Kuswati (mother), Yusuf Fadil (first child, aged 18), Firman Halim (aged 16, second child), Fadilah Sari (aged 12, third child), and Pamela Rizkita (aged 9, last child).^[22] This makes Puji the first female suicide bomber in Indonesia.^[61] Dita was responsible for the third attack where he drove his SUV with highly explosive material to the GPPS. According to the police, the explosion in the third attack was the most powerful. The police stated that the woman was a resident of Banyuwangi, a city located approximately 306 kilometres (190 mi) southeast of Surabaya.^[62]

The Indonesian National Police announced that 3 types of bombs were used in the church attacks. According to them, the bomb in the third attack was the most explosive type and the most destructive, powerful enough to destroy dozens of vehicles and set fire to the front portion of the church.^[63] The third attack was using a car bomb, while the second attack was using belt bombs. The bombs in the second attack were strapped on the three perpetrators, Puji and her 12 and 9 year old daughters. This was evidenced by the examination of their bodies where a specific area (their stomachs area) were torn apart due to the force of the blast. Investigators are still trying to determine the type of bombs that were used in the first attack.^[64]

On the night of 13 May, a house in Wonorejo Asri in Rungkut, Surabaya was stormed by the police. They discovered 3 highly explosive bombs from the house, which were later defused by bomb disposal unit.^[65] Arrows and a bow were discovered on the back of the house. The police also recovered several books and documents from the house for investigation purposes.^[66]

Anton Febryanto family[edit]

The East Java Regional Police identified the victims of the fourth bombing as members of a terrorists group that were planning to execute terror attacks on churches. All of them are from the same family. The deceased family members are Anton Febryanto (father), Puspita Sari (mother), and Rita Aulia Rahman (17, first child). The survivors are Ainur Rahman (15), Faizah Putri (11), and Garida Huda Akbar (10).^[67] According to the police, the father was shot and killed by police officers. The explosion happened first. When the police reached the room, Anton threatened to push the trigger.^[68]

Indonesian National Police revealed that Anton's family had close ties with Dita Uprianto. According to authorities, the two were members of the Surabaya branch of Jemaat Ansharut Daulat (JAD) and the Jemaat Ansharut Tauhid (JAT). Dita was the leader of the Surabaya JAD.^[50]

Surabaya police headquarters attacker family[edit]

Authorities suspected that the attackers who participated in the police HQ attack in Surabaya were members of the same family. ^[38]

Reactions[edit]

Indonesian President Joko Widodo (in white) visited one of the churches that were attacked by terrorists on 13 May

Domestic[edit]

The Communion of Churches in Indonesia (Persekutuan Gereja-gereja di Indonesia, PGI) and the Bishops' Conference of Indonesia (Konferensi Waligereja Indonesia, KWI) released statements expressing their condolences and requesting political elites to not utilize the incident for political gain.^[69] The Indonesian Christian Students' Movement (Gerakan Mahasiswa Kristen Indonesia) called for President Widodo to evaluate the state's security apparatus.^[70] During a sermon at Saint Peter's Basilicain Rome, Pope Francis mentioned the attacks and requested prayers.^[71]

Multiple Muslim clerics, Indonesian political and public figures condemned the attack. Nahdlatul Ulama (NU) general chairman Said Aqil Siradj condemned the attack, remarking that "Islam condemns any form of violence. There is not a single religion in the world that justifies violence as a way of life." and requested people to report on actions that may lead to radicalism or terrorism.^[72] Indonesian Ulema Council denounced the attack, stating that the Quran clearly stated that the act of murder to the innocents is a big sin. They later urged the government to tackle Islamic radicalism in Indonesia to prevent such terror attacks.^[73] Muhammadiyah condemned the attacks, added that suicide bombing (nor killing the innocents) is not jihad. The Surabaya branch of Muhammadiyah dispatched personnel to help the treatment of the victims.^[74] Ansor Youth Movement, a non-profit Islamic youth organization operating under the NU, strongly condemned the attacks as a vile, vicious attacks against humanity, especially in a place of worship. The organization general chairman Yaqut Cholil Qoumas urged law enforcement officers to tackle the threat of radicalization in social media.^[75]

President Widodo flew to Surabaya, visiting the bombed churches and the hospitalized victims. Condemning the attacks, he called the perpetrators as "barbaric" for their acts and the use of under-aged children as suicide bombers.^[76] Expressing condolences for the victims, he stated that the bombings were "a crime against humanity, unrelated with any religion", adding that he had ordered police chief Tito Karnavian to "unravel the bombers' network to its roots".^[77] He guaranteed that the government will cover the medical expenses of the victims.^[78] He also state that he will issue Government regulation in lieu of law (Perpu) if the lawmakers unable to finalize the revision of anti-terrorism laws by June.^[79] The Indonesian Ministry of Health confirmed President's statement that all hospital bills of the victims of the attacks will be paid by the government.^[80]

One of the most controversial religious figure in Indonesia, Bachtiar Nasir, a prominent member of the GNPF who supported the imprisonment of the Christian–Chinese Governor of Jakarta Basuki Tjahaja Purnama, also condemned the attacks. He stated that Allah will condemn and punish them severely and offered his condolences to the victims of the attacks.^[81] Former Indonesian National Armed Forces commander Gatot Nurmantyo also denounced the attacks, stating that the perpetrators were trying to stain the image of Islam.^[82]

Political figures blamed Islamic radicalism as the cause of the attacks. The Indonesian House of Representatives stated that the government needs to do a "jihad" against terrorism. Masinton Pasaribu, a representative from the Indonesian Democratic Party of Struggle (PDI–P), stated that the attacks was an inhuman action and an extraordinary crime and the perpetrators should be severely punished.^[83] An Indonesian Islamic party, the Prosperous Justice Party (PKS) also condemned the attack and regarded the attack as highly anarchist.^[83] Party president Sohibul Iman, stated that every terror attacks are highly despicable, especially in place of worship. Spokesman from Golkar, the second largest party in Indonesia, stated that the attacks were nothing but a cowardice act from several irresponsible people who stained their own religion.^[83]

Prominent opposition party figure Fadli Zon also commented on the attacks. However, despite this, he was jeered and heavily criticized by the public as his criticism was viewed by many as an attack to the incumbent government.^[84] Politicians from his party, Gerindra, joined the condemnation, without attacking the current government. Gerindra chairman Prabowo Subianto expressed condolences for the attacks, asking the Indonesian people to maintain unity.^[85] Spokesman from the Democratic Party, Didi Iriawan, shared the same message. He stated that the attack was unacceptable and called for severe punishment to the perpetrators.^[83]

Several vigils were held across Indonesia. Approximately 1,000 people participated in a vigil in Tugu Pahlawan in Surabaya where participants lit candles for the victims of the attacks. Vigils reportedly held in Bandung, Blitar, and Solo.^[86] There was a free distribution of prosthetic from volunteer for the survivors.^[87]

International[edit]

The U.S. government condemned the attacks, later urged Americans to be aware of the condition in Indonesia.^[88] The U.K. government issued a travel advice for British nationals who were planning to visit Indonesia in response to the bombings.^[89] Australia issued similar travel advice for Australians in Indonesia.^[90] The Government of the Hong Kong Special Administrative Region issued similar travel advice, stating that "Residents intending to visit the country or are already there should monitor the situation, exercise caution, attend to personal safety and avoid protests and large gatherings of people."^[91] The Irish and Chinese governments also issued travel advice for their citizens.^[92]

Singaporean President Halimah Yacob and incumbent Singaporean Prime Minister Lee Hsien Long wrote condolence letters to Indonesia, stating that the Government of Singapore strongly condemn the attacks.^[93] The Singaporean Ministry of Foreign Affairs later issued travel advice for Singaporeans in Indonesia.^[94] Australian Prime Minister Malcolm Turnbull condemned the attacks and offered condolences.^[95] Similarly, the Japanese Government^[96] and the European Union offered their condolences and condemned the attacks.^[97]

United Nations and Organization for Islamic Cooperation secretary-generals António Guterres and Yousef Al-Othaimeen both also released statements condemning the attacks.^[98]

Security[edit]

In Surabaya, the East Java Regional Police asked for cancellation of all Sunday services for the day in response to the attacks.^[99] The Jakarta Metropolitan Policeraised Jakarta's terror alert level to the highest level (Level 1), effective from 13 May 2018 at 08:00 local time.^[100] The province of Central Java, Yogyakarta and Riau Islands later followed Jakarta's action to raise the terror threat level in their provinces,^[101] and the status was set to a national level by the Indonesian National Police. The police spokesman noted that the status was an internal one for police officers and that civilians should go about normally.^[102] Police official stated that Jakarta would remain on that level for an indefinite time. As many as 8,000 police personnel were dispatched in Makassar, South Sulawesi to guard churches and vital objects across the city. Police in Malang stated that roughly as many as 250 personnel would be dispatched across Malang to protect the city's churches.^[103]

The West Java Regional Police stated that security throughout West Java is tightened in response to the attacks and multiple police personnel would be dispatched across West Java.^[104] The security at Ngurah Rai International Airport in Denpasar, Bali would be tightened in response to the attacks.^[105] A prompt inspection was conducted at Soekarno-Hatta International Airport in Tangerang.^[106]

Police officers were deployed to the crime scenes to investigate and safeguard the areas, including members of Mobile Brigade Corps (Brimob) and the bomb squad. The police said that evacuation of victims was their primary focus.^[107] The bombings also prompted the Surabaya administration to cancel the Rujak Uleg Festival on Kembang Jepun Street, slated to be opened by Mayor of Surabaya Tri Rismaharini at noon, to commemorate the city’s 725th anniversary.^[108] In response to the attacks on 13 May, schools across Surabaya were closed on 14 May. Mayor of Surabaya Tri Rismaharini later added that the period would be extended due to security concern.^[109]

In response to the bombings, the chief of the Indonesian National Police Tito Karnavian stated that this is the time for the revision of the anti-terror bill, later urged the members of the Indonesian House of Representatives to revise the anti-terrorism bill, which was viewed as a weak bill by many. According to Tito, terrorists easily evaded arrests due to the bill. Police couldn't arrest and prevent terror attacks due to the absence of a strong terror bill. The police technically couldn't arrest the terror suspects if the terror attack had not been executed.^[110]

Many experts supported and urged the governments to revise the anti-terror bill. Political expert from the Indonesian Political Analysis Institute Maksimus Ramses urged the government to form a special committee for the revision. If the anti-terror bill was revised by the government, the group who was responsible behind the attack Jemaat Ansharut Daulah (JAD) could be listed by the government as a terror group and terror attacks could be quickly prevented.^[111]

The terror threat throughout Indonesia was raised to its highest level. In response to the emergency, Minister of Transportation Budi Karya Sumadi ordered the security in every airports and seaports in Indonesia to be heightened to the maximum.^[112]

Media[edit]

Facebook immediately activated its safety check after the attacks.^[113] Social media was flooded with Indonesians who voiced their condolences, prayers, frustration, and anger in response to the attacks. The hashtags #PrayForSurabaya, #BersatuLawanTeroris (English: #UnitedAgainstTerrorist), and #KamiTidakTakut (English: #WeAreNotAfraid) immediately went viral on Twitter.^[114] A woman was arrested in Sukadana for her viral Facebook post accusing the government of having conducted the bombings as a false flag.^[115]

Indonesian National Police advised people to not share the graphic photos of the victims and the perpetrators of the attacks.^[116] The Indonesian Broadcasting Commission (KPI) also advised news station to not broadcast dead bodies or other graphic materials on TV. Several TV stations cancelled their TV programs in response to the bombings. This announcement was stated on air.^[117]

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Jump up^ Hadi, Nur (13 May 2018). "Bom di Gereja Surabaya, Korban Meninggal Jadi 10 Orang". Tempo.co (in Indonesian). Retrieved 13 May 2018.

Jump up^ Prasetio, Deni (13 May 2018). "Warga Ungkap Detik-detik Ledakan di Rusun Sidoarjo". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ "Two children survive premature bomb explosion in Sidoarjo". The Jakarta Post. 13 May 2018. Retrieved 13 May 2018.

Jump up^ Prasetio, Deni (13 May 2018). "Bom Rusunawa Sidoarjo Meledak Sebelum Anton Lakukan Teror". Detik.com (in Indonesian). Retrieved 13 May 2018.

^ Jump up to:a b Prasetio, Deni (13 May 2018). "Ada Ledakan Bom, Warga Rusun Sidoarjo Dievakuasi". Detik.com (in Indonesian). Retrieved 14 May 2018.

Jump up^ Prasetio, Deni (13 May 2018). "Jihandak Masuk ke Rusun Sidoarjo, Terdengar Lima Ledakan". Detik.com (in Indonesian). Retrieved 14 May 2018.

Jump up^ Rinanda, Hilda M. (14 May 2018). "Bom di Polrestabes Surabaya Meledak di Pos Pemeriksaan". Detik.com (in Indonesian). Retrieved 14 May 2018.

Jump up^ "4 Pengebom Polrestabes Surabaya Tewas". Detik.com. Retrieved 14 May2018.

^ Jump up to:a b "Pelaku Bom di Mapolrestabes Surabaya Diduga Satu Keluarga". Detik.com. Retrieved 14 May 2018.

Jump up^ "Polisi Bopong Bocah Perempuan dari TKP Bom Polrestabes Surabaya". Detik.com. Retrieved 14 May 2018.

Jump up^ "Layanan SIM Polrestabes Surabaya Ditutup Sementara". Detik.com. Retrieved 14 May 2018.

Jump up^ Hadi, Nur (13 May 2018). "Korban Tewas Bom Surabaya Bertambah Jadi 13 Orang". Tempo.co (in Indonesian). Retrieved 13 May 2018.

Jump up^ Puspafirdausi, Fidya A. (13 May 2018). "Tragis, Korban Bom di Surabaya Bertambah, Wanita Hamil 4 Bulan Terluka dan Bocah 11 Tahun Tewas". Tribun Jabar (in Indonesian). Retrieved 13 May 2018.

Jump up^ Faizal, Achmad (13 May 2018). "Minggu Malam, 43 Korban Luka Bom Surabaya Masih Dirawat di 8 RS". KOMPAS (in Indonesian). Retrieved 13 May 2018.

Jump up^ "Ratusan Warga Surabaya Donor Darah Bantu Korban Bom Gereja". CNN Indonesia (in Indonesian). 13 May 2018. Retrieved 13 May 2018.

Jump up^ Prasetia, Andhika (13 May 2018). "Kapolri: Satu Keluarga Pengebom Gereja Surabaya Jaringan JAD". Detik.com. Retrieved 13 May 2018.

Jump up^ Prasetia, Andhika (13 May 2018). "Kapolri: Pengebom Gereja Surabaya Diduga Satu Keluarga". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ Rinanda, Hilda M. (13 May 2018). "Keluarga Pengebom Gereja Surabaya Baru Pulang 'Sekolah' dari Suriah". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ "Pengamat Australia Khawatir Ada Pola Serangan Teror Baru di Indonesia". Detik.com. Retrieved 14 May 2018.

^ Jump up to:a b "Kapolri Sebut Bom Surabaya Aksi Balasan karena Pimpinan JAD Ditangkap". KOMPAS.com. Retrieved 14 May 2018.

^ Jump up to:a b "Kapolri: Dita Pengebom Gereja Surabaya Ketua JAD di Surabaya". Detik.com. Retrieved 14 May 2018.

Jump up^ "Densus 88 Baku Tembak Dengan Kelompok Teroris di Sidoarjo". Tempo.co. Retrieved 14 May 2018.

Jump up^ "Densus 88 Gerebek Dua Lokasi di Sidoarjo, Beberapa Terduga Teroris Ditangkap". Okezone.com. Retrieved 14 May 2018.

Jump up^ "Aparat Gerebek Terduga Teroris Di Sukodono Sidoarjo". Surabaya Pagi. Retrieved 14 May 2018.

Jump up^ Sarwanto, Abi (14 May 2018). "Densus 88 Amankan Tujuh Terduga Teroris di Jatim, Dua Tewas". CNN Indonesia (in Indonesian). Retrieved 14 May 2018.

Jump up^ "Densus 88 kembali tangkap terduga teroris di Bekasi". ANTARA News (in Indonesian). 13 May 2018. Retrieved 14 May 2018.

Jump up^ "Densus 88 amankan dua orang di Sukabumi". ANTARA News (in Indonesian). 13 May 2018. Retrieved 14 May 2018.

Jump up^ "Terduga teroris Cianjur bawa panah yang ujungnya bom". ANTARA News (in Indonesian). 13 May 2018. Retrieved 14 May 2018.

Jump up^ "Polri Tindak 7 Pelaku Teror Sidoarjo-Surabaya, 2 Tewas". Detik.com. Retrieved 14 May 2018.

Jump up^ "Polisi: Tiga Keluarga di Balik Teror Bom di Surabaya-Sidoarjo". Detik.com. Retrieved 14 May 2018.

Jump up^ "Islamic State claims responsibility for Indonesian church attacks". Reuters. 13 May 2018. Retrieved 13 May 2018.

Jump up^ "Indonesia's first female suicide bomber a mum of 4, SE Asia News & Top Stories". The Straits Times. Retrieved 2018-05-14.

Jump up^ Rinanda, Hilda M. (13 May 2018). "Pakai Bom Pinggang dan Bom Pangku, Pelaku Berasal dari Banyuwangi". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ "Jenis Bom di 3 Gereja Surabaya: Bom Mobil Hingga Ikat Pinggang". Detik.com. Retrieved 14 May 2018.

Jump up^ "Bom Surabaya, Kapolri Ungkap Tiga Jenis Bom yang Dipakai". Tempo.co. Retrieved 14 May 2018.

Jump up^ "Polisi Temukan 3 Bom High Explosive di Rumah Pengebom Gereja Surabaya". Detik.com. Retrieved 14 May 2018.

Jump up^ "Geledah Rumah Pengebom Gereja Surabaya, Polisi Temukan Panah". Detik.com. Retrieved 14 May 2018.

Jump up^ Saputri, Maya (13 May 2018). "Sidoarjo Perketat Keamanan Usai Ledakan Bom Rusun Wonocolo Semalam". Tirto.id (in Indonesian). Retrieved 14 May 2018.

Jump up^ Rinanda, Hilda M. (13 May 2018). "Anton Dilumpuhkan karena Ancam Ledakkan Bom". Detik.com (in Indonesian). Retrieved 14 May 2018.

Jump up^ Ratnasari, Elise D. (13 May 2018). "PGI Imbau Bom Gereja Surabaya Tak Dipolitisasi". CNN Indonesia (in Indonesian). Retrieved 13 May 2018.

Jump up^ Damarjati, Danu (13 May 2018). "Marak Teror, GMKI Minta Jokowi Evaluasi Polri sampai BIN". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ Wells, Christopher (13 May 2018). "Pope prays for victims of Indonesia attacks". Vatican News. Retrieved 13 May 2018.

Jump up^ "Islamic groups condemn Surabaya church bombings". The Jakarta Post. 13 May 2018. Retrieved 13 May 2018.

Jump up^ "MUI: Alquran tak Ajarkan Melakukan Bom Bunuh Diri". Republika.co.id (in Indonesian). 13 May 2018. Retrieved 13 May 2018.

Jump up^ Agustina, Widiarsi (13 May 2018). "Muhammadiyah Kecam Teror Bom di Gereja Surabaya". Tempo.co (in Indonesian). Retrieved 13 May 2018.

Jump up^ Triatmojo, Danang (13 May 2018). "GP Ansor Kutuk Keras Aksi Terorisme di Tiga Gereja di Surabaya". Tribunnews.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ Prasetia, Andhika (13 May 2018). "Jokowi: Teror Bom Surabaya Biadab, Pelaku Gunakan 2 Anak". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ Prasetia, Andhika (13 May 2018). "3 Gereja Surabaya Dibom, Jokowi: Bongkar Teroris Sampai ke Akar!". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ Agus, Feri (13 May 2018). "Jokowi Jamin Negara Biayai Korban Luka Bom Surabaya". CNN Indonesia (in Indonesian). Retrieved 13 May 2018.

Jump up^ Ibnu Sani, Ahmad Faiz (14 May 2018). "Jokowi Akan Keluarkan Perpu Jika RUU Terorisme Tak Juga Disahkan". Tempo (in Indonesian). Retrieved 14 May 2018.

Jump up^ Sulistyawati, Rr. Laeny (13 May 2018). "Menkes: Korban Bom Surabaya Ditanggung Pemerintah". Republika.co.id (in Indonesian). Retrieved 13 May 2018.

Jump up^ Damarjati, Danu (13 May 2018). "Bachtiar Nasir: Pembom Gereja di Surabaya Akan Dikutuk Allah". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ Irawan, Dani (13 May 2018). "Gatot Nurmantyo: Biadab! Bom Gereja Tujuannya Pecah Belah Islam". Detik.com (in Indonesian). Retrieved 13 May 2018.

^ Jump up to:a b c d Ibrahim, Gibran M.; Maharani, Tsarina; Hariyanto, Ibnu (13 May 2018). "Politisi Ramai-ramai Kutuk Teror Ledakan Bom di 3 Gereja Surabaya". Detik.com(in Indonesian). Retrieved 13 May 2018.

Jump up^ Noor, Achmad R. (13 May 2018). "Cuitan Heboh Fadli Zon: Pemimpin Lemah, Teroris Berkembang". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ Ibrahim, Gibran M. (13 May 2018). "Prabowo Kutuk Keras Teror Bom Gereja di Surabaya". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ "Potret Aksi Solidaritas untuk Korban Bom Gereja Surabaya". Detik.com. Retrieved 14 May 2018.

Jump up^ "Warganet Ini Tawarkan Prostesis Gratis untuk Korban Bom Surabaya". Detik Health. Retrieved 14 May 2018.

Jump up^ Farhan, Afif (13 May 2018). "AS Minta Warganya Berhati-hati Terkait Bom di Surabaya". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ Godfrey, Kara (13 May 2018). "Is Indonesia safe for travel: Latest travel advice following deadly church bombings". The Daily Express. Retrieved 13 May 2018.

Jump up^ Prakoso, Johanes R. (13 May 2018). "Terkait Bom Surabaya, Australia Juga Keluarkan Travel Advice". Detik.com (in Indonesian). Retrieved 14 May 2018.

Jump up^ Farhan, Afif (13 May 2018). "Akibat Bom Surabaya, Hong Kong Imbau Turisnya Hati-hati di Indonesia". Detik.com (in Indonesian). Retrieved 14 May 2018.

Jump up^ "Kemenpar Hargai Negara yang Keluarkan Travel Advice ke Indonesia". DetikTravel.com. Retrieved 14 May 2018.

Jump up^ "Singapore leaders send condolences on bomb blasts in Indonesia". Channel News Asia. Retrieved 14 May 2018.

Jump up^ "Terkait Bom Surabaya, Singapura Imbau Warganya di Indonesia". DetikTravel.com. Retrieved 14 May 2018.

Jump up^ "Surabaya bombings: Turnbull condemns 'brutality, inhumanity, blasphemy'". The Australian. Retrieved 14 May 2018.

Jump up^ "Jepang Mengutuk Serangan Bom di Gereja Surabaya". Tempo.co. Retrieved 14 May 2018.

Jump up^ "Statement on the attacks on Christian churches in Surabaya, Indonesia". European Union External Action. 13 May 2018. Retrieved 14 May 2018.

Jump up^ "Leaders, luminaries condemn Surabaya bomb attacks". The Jakarta Post. 14 May 2018. Retrieved 14 May 2018.

Jump up^ Utomo, Deni P. (13 May 2018). "Pasca Bom Meledak di Surabaya, Seluruh Kegiatan Gereja Dihentikan". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ Puspita, Sherly (13 May 2018). "Pascaledakan Bom di Surabaya, Kapolda Metro Tetapkan Jakarta dan Sekitarnya Siaga 1". KOMPAS (in Indonesian). Retrieved 13 May 2018.

Jump up^ "Jakarta, East Java, Riau Islands on highest alert after Surabaya bombings". The Jakarta Post. Retrieved 14 May 2018.

Jump up^ "Polri Tetapkan Indonesia Siaga Satu". CNN Indonesia (in Indonesian). 14 May 2018. Retrieved 14 May 2018.

Jump up^ Aminudin (13 May 2018). "Pasca Bom Surabaya, Pengamanan Gereja di Malang Diperketat". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ Solehudin, Mochamad (13 May 2018). "Teror Bom di Surabaya, Polda Jabar Tingkatkan Pengamanan". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ Astika, Nandhang R. (13 May 2018). "Pasca Bom Surabaya, Pengamanan Bandara Ngurah Rai Diperketat". Detik.com (in Indonesian). Retrieved 13 May2018.

Jump up^ Ikhsanuddin, Arief (13 May 2018). "Usai Teror Bom Surabaya, Menhub Cek Bandara Soetta". Detik.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ "Polisi Evakuasi Korban Ledakan Bom Gereja di Surabaya | Republika Online". Republika Online (in Indonesian). 13 May 2018. Retrieved 13 May 2018.

Jump up^ Faizal, Achmad (13 May 2018). "Alasan Keamanan, Pemkot Surabaya Batalkan Festival Rujak Uleg". Kompas.com (in Indonesian). Retrieved 13 May 2018.

Jump up^ "Alasan Keamanan, Risma Perpanjang Masa Libur Sekolah di Surabaya". Detik.com. Retrieved 14 May 2018.

Jump up^ "Kapolri: Revisi UU Antiterorisme Bisa Buat JAD Organisasi Teroris". Detik.com. Retrieved 14 May 2018.

Jump up^ "DPR Didesak Segera Percepat Revisi UU Anti Terorisme". Media Indonesia. Retrieved 14 May 2018.

Jump up^ "Tragedi Bom Surabaya, Menhub Perketat Pengamanan di Simpul Transportasi Strategis". Liputan6.com. Retrieved 14 May 2018.

Jump up^ Rachmatunnisa (13 May 2018). "Facebook Aktifkan Safety Check Bom Surabaya, Begini Menggunakannya". Detik.com (in Indonesian). Retrieved 14 May 2018.

Jump up^ Librianty, Andina (13 May 2018). "Ledakan Bom di Gereja Surabaya, #KamiTidakTakut Jadi Trending Topic". Liputan6.com (in Indonesian). Retrieved 14 May 2018.

Jump up^ Santoso, Audrey (14 May 2018). "Polisi Tangkap Netizen yang Tuduh Bom Surabaya Pengalihan Isu". detiknews (in Indonesian). Retrieved 14 May 2018.

Jump up^ Faizal, Achmad (13 May 2018). "Polisi Imbau Warga Tak Sebarkan Foto dan Video Korban Bom Gereja". Kompas.com (in Indonesian). Retrieved 14 May 2018.

Jump up^ "Bom di Surabaya, KPI Imbau Media Tak Siarkan Gambar Korban". VIVA.co.id(in Indonesian). 13 May 2018. Retrieved 14 May 2018.

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