Rebels launched an attack on an Iraqi police post near the city of Tikrit, killing 12 policemen, and a car bomb exploded in northern Baghdad injuring nine people, officials said today.

GUNMEN ambushed a bus full of Iraqis working for the US military, killing 17 civilians and wounding 13 in Tikrit yesterday, while a car bomb and a gun attack killed four members of the Iraqi security forces elsewhere in northern Iraq.

Gunmen ambushed a bus carrying Iraqis working for the US military, killing 17 civilians and wounding 13 in Tikrit today, while a car bomb and a gun attack killed four members of the Iraqi security forces elsewhere in northern Iraq.