BBC: Huge protests calling for the resignation of Egypt's President Mohammed Morsi and early presidential elections are taking place in the capital, Cairo, and other cities.
Tens of thousands of opponents have massed in Tahrir Square and outside the main presidential palace.
Protesters accuse Mr Morsi of failing to tackle economic and security problems since taking power a year ago.
A presidential spokesman urged them to respect the democratic process.
Morsi supporters massed in the Cairo suburb of Nasr City with banners denouncing the opposition.
The president's critics say the country's first Islamist president has put the agenda of the Muslim Brotherhood party ahead of the country's wider interests.
In Cairo, they have been chanting: "Irhal! Irhal!" ("Leave! Leave!"), reports the BBC's Aleem Maqbool.
Demonstrations are being reported across the country (+ video) » | Sunday, June 30, 2013
