According to reports, Iraqi officials say a wave of car bombings, mainly in Shiite areas of Baghdad, has killed 12 people.

Police officials say a car bomb in the neighborhood of Sadr city killed four people and wounded six. Another car bomb elsewhere in Sadr city went off near a cluster of homes, killing two people and wounding.

A short while later, a car bomb exploded in a commercial street in Baghdad's eastern district of Jamila, killing three people and wounding 10.

Police say a fourth car bomb went off near a traffic police office in eastern Baghdad, killing three people, including a traffic policeman. Seven people were wounded in that attack

Medical officials confirmed casualty figures. All officials spoke on condition of anonymity because they are not authorized to talk to media.