The state-run Anadolu Agency said the man, identified by his initials ZC, was arrested yesterday in a village in the central Turkish province of Cankiri, where he was working as an acting village imam.
The private DHA agency reported that he had escaped to Afghanistan while on trial for his role in the attack. He was later convicted of membership in the al-Qaida network and sentenced to six years in prison.
The al-Qaida attacks in Istanbul in November 2003 targeted the HSBC bank, two synagogues and the British Consulate, killing 57 people.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)