Second source on this;
Egypt: Afghans, Pakistanis and Syrians Arrested
August 17, 2013 | 1234 GMT
Afghans, Pakistanis and Syrians were among the more than 1,000 people arrested Aug. 16, a government spokesman said Aug. 17, Al Arabiya reported. The brother of al Qaeda leader Ayman al-Zawahiri was arrested at a checkpoint in Giza, Egypt on Aug. 17, MENA reported. Among the 173 people killed Aug. 16 was the son of Muslim Brotherhood leader Mohammed Badie. The wave of suppression will pull the group in different directions, toward either violence or reform.