Gunmen killed at least 21 policemen attacks on checkpoints in the western Iraqi city of Haditha, officials say.
Dozens of attackers struck across the city, Lt Col Owaid Khalaf was quoted by the AFP news agency as saying.
Anbar province, where Haditha is situated, was once a stronghold for Sunni militants following the 2003 invasion of Iraq.
Violence there dwindled after tribal leaders allied themselves with US-led forces.
bbc.com
