CAIRO (AP) -- Egypt's official news agency says 36 people were killed when Muslim Brotherhood detainees tried to escape from a prison truck convoy in northern Cairo.
The agency said that gunmen exchanged fire Sunday night with guards of the trucks carrying more than 600 detainees rounded up in earlier street violence between security forces and supporters of ousted President Mohammed Morsi.
The official MENA news agency described the detainees and the gunmen as belonging to the Muslim Brotherhood, which Morsi belongs to as well. The news agency said detainees were being transferred to Abu Zaabal prison in northern Cairo when the attack happened.
The official website for Egyptian state television reported that security forces fired tear gas and exchanged gunfire with the attackers.