Six US soldiers died in Iraq on Sunday, the US military announced. Three were killed by a roadside bomb during a patrol south of Baghdad, the military said. One soldier was wounded in that incident. Another soldier died and three were wounded by a mortar or rocket attack in a separate incident south of the capital, the military said in another statement. Two more soldiers died Sunday from wounds sustained in combat, the military said - one each in Diyala and Salahuddin provinces, both north of Baghdad. Earlier, the military announced that four US soldiers were killed Saturday in an explosion near their vehicle in Diyala. Another soldier was also wounded in the attack, and evacuated to a US military hospital, a statement said.