Fresh clashes between police and protesters in Cairo

Egyptian riot police have fired tear gas and locked down Cairo’s Tahrir Square and several other main streets as clashes broke out during a march by Islamist supporters of ousted President Mohammed Morsi.

Troops sealed off the square with tanks and barbed wire, diverting traffic from the central plaza as thousands of Morsi supporters marched from several districts in the city, with plans to converge into the square.