29 January 2011
Last updated at 07:49
Tens of thousands of protesters poured into the streets of Egypt's cities for a fourth day of rallies, demanding an end to President Hosni Mubarak's 30-year rule.
The demonstrators fought running battles with riot police in the capital Cairo, and also in the cities of Alexandria and Suez.
Protesters hurled stones and set police vehicles on fire.
The headquarters of the governing NDP party in Cairo were seen engulfed by flames, as the protesters chanted "Down, down, Hosni Mubarak".
Earlier, police used tear gas, rubber bullets and water cannon to try to disperse the crowds. Hundreds of people were wounded, and in Suez at least one person was killed.
Opposition figurehead Mohamed ElBaradei, a Nobel Peace Prize winner, joined the protests in Cairo.
A night-time curfew was later declared in Cairo, Alexandria and Suez and then extended nationwide. But the demonstrators stayed on the streets in defiance of the government order.
They later cheered columns of army vehicles deployed in Cairo. Many of the protesters are hoping the army will take their side.
During the day, many of the protesters stopped to pray in front of riot police.
After nightfall, President Hosni Mubarak gave a televised address to the country, saying that while he understood the demonstrators' concerns, he did not approve of their methods.
The death toll has been rising and up to 1,000 have been injured since the protests began on Tuesday, - driven by frustrations over economic hardship and official corruption.