A suicide motorcycle attack hit on Tuesday a crowd of traffic policemen in central Baghdad, killing four people and wounding 18 others, including policemen, a well-informed source said.

"A suicide bomber blew up a motorcycle bomb near a crowd of traffic policemen in the Andalus Intersection, killing four people, including a policeman, and wounding 18, including a policeman," the source told Xinhua on condition of anonymity.

Earlier, two coordinated blasts occurred in the al-Rubaie Street in eastern Baghdad, killing two civilians and injuring 16 others, including 12 policemen.

The two blasts also damaged four police vehicles as well as several nearby cars and buildings.

Insurgents frequently attack Iraqi police and army forces, accusing them of collaborating with U.S. occupation forces.

Source: Xinhua