IRBIL, Oct 10 (KUNA) -- Iraqi authorities said Wednesday that it had arrested the killer of a policeman who was murdered earlier in Kirkuk. Speaking to Kuwait News Agency (KUNA), a police officer said unknown gunmen had shot dead Khaz'al Nayef who was a member of the police force in Al-Huwaijah. A police force immediately surrounded the area and arrested a member of the Islamic Republic of Iraq insurgent group, Khamees Abbas who confessed committing the crime.