Iraqi police say a suicide car bombing in the northern city of Arbil has killed at least 11 people and wounded dozens more - mostly new police recruits.

Officials say the death toll could rise as many of the wounded were in serious condition.

Witness say security forces fired on the car in an effort to stop the suicide bomber, but he raced his vehicle into a field where some 200 new recruits had gathered for training early Monday.

Hours earlier, at least five Iraqi policemen were killed and nearly 20 others wounded in a car bomb explosion near a police station in Baghdad.

The U.S. military said the explosion occurred as police responded to an insurgent attack on the Baya police station.

Some information for this report provided by AP and Reuters.