Most of the casualties were policemen in the 9:30 am (0630 GMT) attacks in the oil-rich ethnically-mixed city.
Zangan said that the first explosion was caused by a magnetic "sticky bomb" attached to a car close to the police headquarters. When police and emergency responders arrived at the scene, another car bomb detonated.
At least two bombs exploded in Iraq`s northern city of Kirkuk on Thursday, killing at least 15 people, a police official and other security sources said to Reuters.
An Interior Ministry source put the toll at 15 dead and 40 injured, while a police source said the explosions killed 20 people and injured 15.
Kirkuk is located 250 km (155 miles) north of Baghdad.
"Two explosions occurred, one of them a car bomb near a bus station in central Kirkuk. There are many casualties but as yet we don`t know the exact number," Jamal Tahir, the police chief of Kirkuk province, told Reuters.
A smaller explosion was followed by a car bomb blast when police and rescue workers responded at the scene near Kirkuk`s police headquarters, a police source said.
(U.H-AK)
Editor: Priyambodo RH
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