Jakarta. National Police chief General Tito Karnavian has said that the explosives used in the Kampung Melayu attack in East Jakarta last week, were often used by Islamic State-linked groups in Iraq and Syria, state news agency Antara reported on Sunday (28/05).
A chemical compound called triacetone triperoxide (TATP) as used to produce the bombs. According to Tito, each of the bombs had a different power of destruction.
"The first blast was meant to attract people from the surrounding areas," Tito said.
The second blast, more powerful, he added, was a pressure-cooker bomb carried by the second bomber in his backpack.
"The explosion destroyed the perpetrator's body completely ... Shrapnel, bolts, buckshot shell and small scissors [inside the bomb] had a bullet-like effect. The impact was devastating," Tito said.
Antara reported that the suicide bombers have been identified as Ichwan Nurul Salam and Ahmad Sukri, both of the greater Bandung area, West Java. They died during the attack, killing three and injuring 12 others.
Ichwan and Ahmad were members of the Jamaah Ansharut Daulah (JAD), a group affiliated with the Islamic State group. Both are believed to had been in touch with Bahrun Naim, an Indonesian militant based in Syria, who is suspected of organizing an attack in January last year, in which eight people were killed in Central Jakarta.
The chemical used in the recent assault was also found in the bomb used in the Manchester attack last week, in the November 2015 attack in Paris, the March 2016 attack in Brussels and the July 2005 bombings in London. The high explosive is often chosen by terrorists due to its availability on the market.
On Thursday, the police's counterterrorism unit Densus 88 and West Java Police arrested three men reportedly linked to the Kampung Melayu twin explosions.