Cairo: Egyptian authorities have arrested the brother of al Qaeda chief Ayman al-Zawahiri, a security official said on Saturday.
He said Mohammed al-Zawahiri, leader of the ultraconservative Jihadi Salafist group, was detained at a checkpoint in Giza, the city across the Nile from Cairo.
Mohammed al-Zawahiri`s group espouses a hard-line ideology but was not clandestine prior to Egypt`s July 3 coup.
He was allied with ousted President Mohammed Morsi, an Islamist, whose supporters are now taking to the streets to protest the killings of its supporters in a security crackdown last week.
The official declined to give further details.