Police in Yemen have attacked anti-government demonstrators in the centre of the capital, Sanaa, killing up to six people and injuring many more.
Reports say hundreds of police moved in, using tear gas, water cannons and live bullets at a protest camp in Tahrir Square.
The clashes came after the US urged opposition groups to take up President Ali Abdullah Saleh’s call for talks.
Weeks of protest against his 32-year rule have left about 30 people dead.
The protesters have been camping out in Sanaa’s Tahrir Square for weeks.
Doctors in the camp said police were blocking medical teams from entering the area.
