Officials say a drive-by shooting and a bomb in Iraq have killed at least six people.

A police officer says gunmen in a speeding car opened fire Sunday at a check point run by anti-al-Qaida, pro-government Sunni militiamen in Baghdad's western suburb of Abu Ghraib, killing four and wounding three.

The Sunni militia, known as the Awakening Council, was formed by the U.S. forces during the height of the insurgency. They are seen as traitors by al-Qaida local branch and other militant groups.

The officer added that two civilians were killed and eight wounded when a bomb exploded in an outdoor market in the capital's western Jihad neighborhood.

Two medical officials confirmed the figures. Both spoke on condition of anonymity as they were not authorized to release information.