At least six people were killed in two back-to-back roadside bomb blasts near the Iraqi capital Baghdad late on Sunday, Xinhua reported.
Two members of the Sunni paramilitary group "the Awakening Council" were killed when their car detonated a roadside bomb in al Nibaie area, some 50 km north of Baghdad.
A second roadside bomb exploded minutes later when another vehicle carrying militiamen rushed to the scene. It killed four other people, said a police official requesting anonymity.
The Awakening Council is a consortium of Sunni militia, who once worked with al Qaeda in the aftermath of 2003 Iraq war against American occupation. But they turned their rifles to al Qaeda after the latter exercised indiscriminate killing against both Shi'ite and Sunni neighbourhoods.