Violent fighting has broken out in Egypt's capital Cairo between the president's supporters and protesters that want him to quit.
Petrol bombs and stones have been thrown and gunshots have been fired, as both sides battle in Tahrir Square.
Protesters have built barricades to hold back President Hosni Mubarak's supporters.
An Egyptian official said five people have died and more than 800 have been injured in the fighting.
The fighting began on Wednesday when supporters of President Hosni Mubarak charged into Tahrir Square, some of them on horses and camels.
Mubarak announced on Tuesday that he would leave after the elections in September - but some protesters want him to go now.