BAGHDAD (AP) — Authorities say seven Iraqi police have been killed in two bombings and a drive-by shooting in a former al-Qaida stronghold in western Iraq.

The attacks before dawn Sunday around the city of Fallujah also wounded nine police.

Security forces immediately sealed off all roads leading into Fallujah and imposed a curfew on the city, 65 kilometers (40 miles) west of Baghdad.

Officials said two explosives-packed cars blew up within a few minutes of each other in Fallujah and the nearby village of Karma, killing three policemen.

Fifteen minutes later, a gang of gunmen fired on a Karma police station, killing four. The gunmen escaped.

All officials spoke on condition of anonymity because they were not authorized to release the information to reporters.