Also, police said that attackers using guns fitted with silencers killed three off-duty policemen in a drive-by shooting near Fallujah, 65 kilometers (40 miles) west of Baghdad.
Health officials confirmed the casualties. All spoke anonymously because they were not allowed to brief reporters.
The new violence came a day after a series of deadly attacks that left 19 dead. Violence has been on the rise in Iraq recently amid political and sectarian tension.