Running battles in Tahrir Square
Clashes have erupted in the Egyptian capital between supporters of President Hosni Mubarak and demonstrators calling on him to step down immediately.
Rival groups of protesters are fighting pitched battles in and around Cairo's Tahrir Square. Many people have been wounded and shots have been heard.
The army has called on all protesters to return home and allow the country to return to normal
WHYS will be talking to people caught in the protests from 1800 on Tuesday.