"So they were not lone wolves, the perpetrators were members of Jamaah Ansharut Daulah (JAD)," he said at the offices of the Coordinating Ministry for Political, Legal and Security Affairs in Jakarta, Friday.
JAD itself, he continued, is a group that emerged in 2015 and has been known to have supported the terror acts carried out by the Islamic State of Iraq and Syria (ISIS).
"Hierarchically, JAD is also connected to ISIS," he revealed.
Syafruddin did not specify on the history in the relations between JAD and ISIS, but he pointed out that police force personnel often become targets of the groups radical acts.
Meanwhile, in January 2017, the United States Foreign Department had issued a statement that categorized JAD as the group that leans towards ISIS the most in Indonesia.
It has also been mentioned as the organization that houses hundreds of ISIS sympathizers all across Indonesia.
The U.S. government then blocked its funding and banned American civilians from getting involved with the group.
On Wednesday night, two suicide bombs were detonated in the Kampung Melayu Terminal area in East Jakarta. One at 9 pm and another at 9.05 pm.
The incident led to the death of two suicide bombers and three police force personnel, while 11 others were wounded, five of which were civilians and six were police officers.(*)