Six policemen were reportedly killed and 15 others were wounded as a result of two suicide bombings in Iraq's western province of Anbar.
A provincial source said that the attacks occurred in the morning when two suicide bombers blew themselves up at the police command of the city of Fallujah, some 50 km west of the Iraqi capital of Baghdad.
The suicide bombings were followed by mortar barrage and small arms fire by gunmen on the site, sparking fierce clashes between the guards and the attackers.
The source further said that the clash between the security forces and attackers is still undergoing, as some gunmen holed up in the nearby building of electricity department in the central city.
The provincial operations command has blocked all the city entrances and imposed an indefinite curfew.