An Iraqi army soldier and a policeman were killed on Monday in separate incidents in the restive city of Fallujah, some 50 km west of Baghdad, local police source said.
"An Iraqi army soldier was shot dead at about 9:00 a.m. (0600 GMT) by sniper gunshot while manning a checkpoint in the western entrance of Fallujah City," the source told Xinhua on condition of anonymity.
U.S. and Iraqi forces immediately blocked the checkpoint and condoned off the surrounding area, he said.
In a separate incident, three gunmen in a car showered a policeman with bullets and killed him near his house in the Mualimeen neighborhood in Fallujah, said the source.
Meanwhile, a roadside bomb went off near a U.S. patrol in the Albu Hatim area in the southwest of the city, damaging a U.S. Humvee, according to the source.
It was not clear whether the U.S. troops sustained any casualty by the blast, the source said, adding that the U.S. troops sealed off the area.
The Sunni-dominated Fallujah frequently witnesses insurgent attacks against the U.S. and Iraqi government forces despite U.S.- Iraqi military operations in the city to stamp out insurgency.