US
The Revolutionary Guards answer to Iranian Supreme Leader Khamenei, whose power far surpasses that of Rouhani
Mohamed Aboutrika is thought to have financed banned Muslim Brotherhood
The attack, which left seven dead, was part of a wave of violence after the army removed elected president Morsi
In another incident, nine policemen were injured when an explosive device planted on the road was remotely detonated
Authorities arrested thousands of Brotherhood leaders and members, including Morsi, since ouster by the army in 2013