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

US aircraft blasted the rebel stronghold of Fallujah three times in 24 hours over the weekend in a concerted effort to hit militants loyal to guerrilla chief Abu Musab al-Zarqawi.

US Marines have warned guerrillas in Iraq’s war-torn city of Fallujah that they have only days to hand over their heavy weapons or face a possible attack.