A car bomb went off near an Iraqi police patrol in northern Baghdad on Monday, wounding a policeman and a civilian, a police source said.

An explosive-packed car detonated at about 9:30 a.m. (0530 GMT) when a police patrol was passing in the main road in Waziriyah neighborhood, the source said on condition of anonymity.

The blast damaged a police car and wounded a policeman aboard along with a civilian, the source said.

In a separate incident, a makeshift bomb went off at about 9:00 a.m. (0500 GMT) near a passing U.S. patrol under a bridge in Mashtal neighborhood in eastern Baghdad, the source said.

It was not clear whether the U.S. troops sustained any casualties, the source added.

Insurgents frequently attack U.S. forces and Iraq's fledgling security troops.

Source: Xinhua