There have been further scenes of violence and unrest in the Egyptian capital of Cairo.

Riot police had to be deployed overnight, after petrol bombs were thrown near the presidential palace.

One man was shot dead in the violence in which police used tear gas to disperse protesters against the Islamist President Mohamed Morsi.

Opposition groups say Morsi has betrayed the Egyptian people - who overthrew former dictator Hosni Mubarak two years ago.

53 people have been injured in the clashes, and 20 people were arrested.