Gunmen ambushed a bus carrying workers to the airport on Monday, showering them with bullets and killing nine people, a paramedic said.

At least 11 people were wounded in the attack, said a paramedic at Yarmouk hospital, where the victims were taken. He spoke on condition of anonymity because he was not authorized to talk to reporters.

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The victims were mainly Shiite Muslims from Baghdad's Sadr City neighborhood and were attacked before reaching the main checkpoint at the airport's entrance, the official said.

Also Monday, a roadside bomb wounded three policemen in a southeastern section of the Iraqi capital, police said.