Turkish intelligence officers have arrested an Egyptian-born terror suspect wanted by Washington who was a top explosives expert for the Islamic State group, state media reported yesterday.

The suspect, identified as Mustafa Abdulwahab Mahmud and born in 1999, was detained with three others on the outskirts of Istanbul after fleeing Syria, the reports said.

The indictment said he joined the IS group in Syria, where he specialised in making suicide belts and various explosive devices.

The Istanbul prosecutor's office is seeking 22.5 years in prison on charges of membership of a terror group.