Egypt crisis: 'Ugly scene' as Cairo protesters clash

Rival protesters have clashed outside Egypt's presidential palace in Cairo, as unrest grows over a controversial draft constitution.

Petrol bombs were thrown and a number of people were injured, amid reports of shots being fired.

Supporters of President Mohamed Morsi dismantled tents set up outside the presidential palace by Morsi critics.

Vice-President Mahmoud Mekki has said a referendum on the draft will go ahead on 15 December despite the unrest.

Jon Leyne reports from Cairo.