(KUNA) -- An Iraqi army lieutenant was killed on Friday as his checkpoint was attacked by unknown gunmen southwest of Kirkuk, while a Kurdish security personnel got kidnapped. Iraqi police source said a checkpoint in the Tal Al-Thahab area was attacked by unknown gunmen using a white sedan, which resulted in the killing of first lieutenant Arshad Nour Ibrahim.Meanwhile, unknown gunmen using a civilian vehicle have kidnapped a security personnel from the Al-Qadisya area close to Kirkuk power station. Iraqi police source added an improvised bomb exploded in one of the patrolling police vehicles on the main street of Kirkuk, while a similar attack targeted Multi-National Force (MNF) vehicle on the way of Kirkuk.