BAGHDAD — Iraqi officials say a coordinated attack involving two suicide bombers and several gunmen has killed five policemen in a former al-Qaida stronghold.

A police officer says one bomber detonated his explosives-laden belt at the main checkpoint outside police headquarters in the central city of Fallujah on Monday morning.

The second bomber blew himself up near the building gates as security forces engaged in a shootout with the gunmen, who later fled the scene. The attack also wounded nine policemen.

A medical official confirmed the causality figures. Both officials spoke on condition of anonymity because they were not authorized to talk to media.

Fallujah, a former insurgent stronghold, is 65 kilometers (40 miles) west of Baghdad.