Egypt split over new interim leader Adly Mansour
4 July 2013 Last updated at 22:38 BST
Egypt's military has moved against the leadership of the Muslim Brotherhood a day after deposing President Mohammed Morsi.
Mr Morsi is in detention, as well as senior figures in the Islamist group of which he is a member. Hundreds more are being sought.
The top judge of Egypt's constitutional court, Adly Mahmud Mansour, has been sworn in as interim leader.
He has pledged to hold elections based on "the genuine people's will".
Jeremy Bowen reports.