A roadside bomb that missed a passing US military convoy killed seven Iraqis and wounded one south of Baghdad today, police and hospital sources said, while a suicide car bomb at police headquarters in Tikrit killed six.

A roadside bomb that missed a passing US military convoy killed seven Iraqis and injured one south of Baghdad today, police and hospital sources said.

US troops opened fire near a police checkpoint south of Baghdad after their convoy was hit by a roadside bomb. A hospital official said yesterday that at least eight people were killed in the second American attack in two days.