Iraqi security forces have killed at least four people and wounded more than 50 as they tried to push protesters further back to their main camp in central Baghdad, police and medical sources say.
Three protesters died on Thursday morning after tear gas canisters directly struck them in the head and another died in hospital from wounds from a stun bomb fired by security forces.
Security forces used live rounds, rubber bullets and fired tear gas canisters in a bid to disperse hundreds of protesters gathered near Tahrir Square, a Reuters cameraman said.
At least half of the wounded protesters had injuries sustained from live ammunition.
An injured person receives first aid during clashes between Iraqi security forces and anti-government demonstrators. Source: AP
The others were taken to hospital having choked on tear gas or having been struck by rubber bullets.
The square has been the epicentre of the country's anti-government protests for weeks.
Security forces increased use of tear gas, rubber bullets and live fire came after two days of relative calm.
More than 300 people have been killed since the protests in Baghdad and the south of the country started in early October, driven by discontent over economic hardship and corruption.
Protesters sit-in on a bridge leading to the Green Zone government areas. Source: AP
Demonstrations were also taking place in several locations in southern Iraq.
Protesters on late Wednesday set fire to local officials' houses in the town of Gharraf, 25km north of the southern city of Nassiriya, security sources said.
Prime Minister Adel Abdul Mahdi's government has taken some measures to try to quell the unrest, including handouts to the poor and creating more job opportunities for college graduates.
But it has failed to keep up with the growing demands of demonstrators who are now calling for an overhaul of Iraq's sectarian political system and the departure of its entire ruling elite.
The unrest is among the biggest and most complex challenges to the current ruling elite since it took power after the US invasion and the toppling of Saddam Hussein in 2003.
