Egypt arrests Zawahiri brother for 'backing Morsi': source

This still image from video obtained on October 26, 2012 courtesy of the Site Intelligence Group shows Al-Qaeda leader Ayman al-Zawahiri speaking in a video, from an undisclosed location, released by Al-Qaeda???s media arm, as-Sahab. Egyptian authorities have arrested his brother Mohamed al-Zawahiri for supporting ousted Islamist president Mohamed Morsi, a source told AFP. (SITE Intelligence Group/AFP/File)

Egyptian authorities have arrested Mohamed al-Zawahiri, brother of Al-Qaeda head Ayman al-Zawahiri, for supporting ousted Islamist president Mohamed Morsi, a security source told AFP on Saturday.

The brother was arrested in his home district of Giza, adjacent to the capital, the source said.