Gun battles in Haiti between UN troops and rebels have left four people dead, including two peacekeepers.
Violence continues despite the UN deployment
A Sri Lankan soldier died during a raid on a rebel-held police station in the south - the first peacekeeper to die in Haiti since the force arrived in June.
A Nepalese soldier was later killed on patrol in the central town of Hinche.
The rebels - mostly former troops - helped to oust President Jean-Bertrand Aristide from power, but have since turned against the interim government.
The former soldiers control large parts of the country and are a key cause of instability, the BBC's Claire Marshall says.
They have not been paid since the army was disbanded by Mr Aristide in 1995.
The decommissioned troops are demanding compensation from the interim government as a reward for their part in the rebellion which toppled the former president last year.
Our correspondent says Sunday's raids by UN forces are a sign that the mission is trying to solve the problem of the former soldiers by force.
Mr Aristide was forced into exile a year ago.
Violence continues on the island despite the presence of the 7,400-strong UN mission.