Thousands of anti-government protesters have gathered again in central Cairo's Tahrir Square for a thirteenth straight day of protest, which they called 'Sunday of the martyrs'.

They have dubbed Sunday the day of the martyrs, following Friday's "Day of departure" and the "Day of anger" on January 28, which was marked by violent clashes with pro-Mubarak protesters.

Coptic Egyptians in Tahrir square are expected to conduct their Sunday mass alongside their Muslim counterparts who are planning to pray for the martyrs of the Egyptian revolt, the hundreds who died in the past twelve days.

Meanwhile, Egypt's government and opposition have agreed to set up a committee to study constitutional reform, state TV says, after days of protests calling for President Hosni Mubarak to quit.

The move followed talks between new Vice-President Omar Suleiman and key opposition members, including the banned Muslim Brotherhood.

It was the first time the government and the Brotherhood have held talks.

Opposition groups have not yet confirmed the reports. They want Mubarak to resign immediately. He says to do so would cause chaos and has said instead that he will not stand for re-election in September.

Many banks opened for the first time in a week on Sunday, with long queues of people forming to withdraw money.

The leadership of the ruling National Democratic Party (NDP) resigned en masse on Friday, apparently in response to the protests.

Two of Mubarak's allies, including his son Gamal, lost their posts while Hossam Badrawi was appointed secretary general.