A suicide attacker detonated a car bomb today outside the Iraqi police academy in the northern city of Kirkuk as hundreds of trainees and civilians were leaving for the day, authorities said.
Dozens have been killed, said Iraqi National Guard Gen. Anwar Mohammed Amin.
Ambulances raced to the scene, where seven cars were on fire. Rescue personnel took the wounded away on stretchers.
Militants waging a 16-month-old insurgency in Iraq have used car bombings, sabotage and kidnappings in an effort to destabilise the country and drive out coalition forces and reconstruction workers.
The last such attack occurred on August 27, when a car bomb exploded as a US military convoy moved through a traffic circle on the western edge of the northern city of Mosul, wounding 10 Iraqi civilians and one US soldier.