The U.S. military said on Saturday that 21 people were killed in two bomb attacks, including a suicide car bombing, in the northern city of Mosul on Friday.
"Al-Qaida murdered 21 innocent Iraqis," the U.S. military spokesman Gregory Smith told a news conference in Baghdad Green Zone.
Earlier, an Iraqi police source put the toll at eight people killed and 20 others injured in the two bomb attacks, including a suicide car bombing targeting a police patrol.
The suicide car bomber struck the police patrol in the al- Mithaq intersection in southeastern the city, killing three policemen, four civilians and wounding 20 people, the police said.
Also on Friday, a roadside bomb struck a police patrol in the city, damaging a police vehicle and killing a policeman aboard, the source said.