Aman Abdurrahman, 46, is considered the ideological leader of Jemaah Ansharut Daulah (JAD) - a loose grouping of Islamic State sympathizers in Indonesia. He was convicted of planning a 2016 gun-and-bomb attack in the heart of Jakarta, the capital, that killed eight people, including four attackers.
Abdurrahman was also proved to be behind a suicide attack last year that killed three police officers at a Jakarta bus station and the bombing of a church in Samarinda on Borneo island that wounded four children. He was serving a sentence in a maximum security prison at the time.
