A roadside bomb has killed a US soldier and wounded three others in the Iraqi capital.
A US military spokesman said the bombing triggered a shootout with gunmen and that Iraqi children were caught in the crossfire. There were no immediate reports of civilian casualties.
Earlier on Sunday, US military officials extended a ceasefire in the Iraqi city of Fallujah, where they say Iraqi police and US Marines will begin joint patrols Tuesday.
The extension comes one day after President Bush conferred with top national security and military advisors on the three-week stand-off between US Marines and insurgents holed up in the city.
Elsewhere, two rocket attacks in Mosul killed four Iraqis and wounded at least 10 others early today.
In a separate development, a third US sailor has died from wounds sustained Saturday in a seaborne raid on a Persian Gulf oil facility.
In the attack near Basra, suicide bombers detonated explosives onboard a small boat that the Americans were trying to board. Minutes later, two other boats blew up near oil terminals in the same area.
The facilities near Basra were not damaged, and officials said they are ready to reopen the terminals early this week.