Six U.S. soldiers killed in Iraq: military

BAGHDAD (Reuters) - Four American soldiers were killed in attacks south of Baghdad on Sunday while another two died from wounds suffered in operations north of the capital, the U.S. military said.

The U.S. military said three of the soldiers killed on Sunday south of Baghdad had been hit by a roadside bomb. The fourth soldier was hit by "indirect fire".

It was unclear exactly when the two soldiers who died on Sunday had been wounded.

The toll makes it a deadly weekend for American troops after four soldiers were killed in an explosion near their vehicle in Diyala province north of Baghdad on Saturday.

More than 3,270 American soldiers have been killed in Iraq since the 2003 invasion.