An Iraqi civilian was kidnapped Friday by unknown gunmen in northern Kirkuk. Speaking to Kuwait News agency (KUNA), one of Kirkuk's police commanders said the kidnapped person was the son of an Arab tribal chief, adding that the abducted was taken to a village named Qaibah. The tribal chief, added the commander, was assassinated by unknown gunmen last year.In another development, the source said that four senior officers in charge of protecting oil facilities were arrested by the Multi-National Force (MNF). He explained that the arrested officers were Colonel Ali Ahmad, who visited Syria lately, and three Iraqi army majors.