Iraqi police say two suicide bombers have attacked a police station in the northern city of Mosul, killing themselves and the police commander.
Speaking on the condition of anonymity, police also said a third suicide bomber was killed as he was approaching the federal police headquarters.
There were no immediate reports of other injuries.
No one has claimed responsibility for the attack, which comes two days after two suicide bombers killed 17 people and wounded dozens in an attack on a government building in the western city of Ramadi.
compiled from agency reports