http://www.bbc.co.uk/news/world-middle-east-12345656There is a tense stand-off in the Egyptian capital's main square, after fights broke out between supporters and opponents of beleaguered President Hosni Mubarak.
Thousands of the president's supporters had surged into Cairo's Tahrir Square, dismantling barricades set up by anti-Mubarak groups.
It followed a call by the army for protesters to return home after nine days of anti-government demonstrations led Mr Mubarak to pledge he would not stand for re-election in September.
http://www.bbc.co.uk/news/world-middle-east-12307698Opposition protesters tell AFP news agency that undercover police have stormed their protest in Tahrir Square
Al-Jazeera TV broadcasts pictures of running battles in Tahrir Square, backing up earlier AFP report
The BBC's Jim Muir in Tahrir Square confirms that clashes are going on between opposition protesters and pro-Mubarak groups.
More from the BBC's Jim Muir: "It's not clear how much violence is happening, but projectiles have been thrown. There is a huge potential for conflict. The army had previously succeeded in keeping Mubarak supporters away from the square, but the army lines appear to have been breeched."
Reuters says the protesters involved in clashes in Tahrir Square were using stones and sticks, and about 10 people at the scene were wounded.
Dubai's al-Arabiya TV says pro-Mubarak protesters have assaulted one of their reporting crews and destroyed their equipment.
http://twitter.com/#!/NadiaEmany many injured passing by
Tear gas clouds rise in Tahrir. Several injured by rocks passed in front of me. One hit in eye
Mubarak failed to stop revolution using police thugs. Now he's trying to do it by tearing the egyptian people apart
rock throwing between both sides
mubarak civilian thugs in tahrir trying to take over. Journalists not safe as egyptians on both sides lose trust in media
Mubarak police thugs killed the egyptian protesters. Its the turn now of mubarak thugs #egypt #jan25
army let in huge pro mubarak protest. Lots of chaos. People trying to stir trouble by setting ppl against each other
http://twitter.com/#!/monaeltahawyBREAKING: Police force enters Tahrir and starts attacking protesters
Al Jazeera on live now
http://english.aljazeera.net/ CNN
http://www.cnn.com/Protesters injured during clashes between pro- and anti-Mubarak demonstrators in Cairo.