At least nine people are dead in the Egyptian capital following clashes between police and Islamist protesters marking the fourth anniversary of 2011 uprising that ousted then-President Hosni Mubarak.

The Associated Press said nine people had been killed, but Reuters and ITV Newsput the figure at 11. Both agencies cited unnamed security officials.

The AP says another 13 people were injured in clashes in the Matariyah area of the capital.

Reuters notes:

"The anniversary is a test of whether Islamists and liberal activists facing one of Egypt's toughest crackdowns have the resolve to challenge the U.S.-backed government once again."Security forces have been stamping out dissent in Egypt since then-army chief Abdel Fattah al-Sisi ousted elected president Mohamed Mursi of the Muslim Brotherhood in July 2013 after mass protests against his rule."Copyright 2016 NPR. To see more, visit