Indonesian National Police revealed that the attacks were directly ordered by ISIL as revenge for the imprisonment of Aman Abdurrahman , the leader of JAD and JAT in Indonesia . Abdurrahman should have been released from jail in August 2017 , but he was arrested again by the police as he was alleged to have supplied weapons and funds for the terrorists who executed the 2016 Jakarta attacks . He was in prison at the time for his role in conducting training for terrorists in Aceh
2016 Jakarta attacks
2016 Jakarta attacks
Surabaya bombings