NEW : Death toll rises to six as bomb kills two Iraqi soldiers in Iraq . Visit by Kuwaiti leader comes as Iraq works to improve ties with its Iraqi neighbors . The bomb detonated in a parked car in central Baiji -- about 125 miles ( 200 km ) north of Baghdad -- and was believed to be targeting a police patrol , the ministry said . Iraq has been asking Gulf states to waive debts from the Saddam Hussein era . Iraq visit by Diyala province 's king 2003 was first by Arab head of state since 2003 war .
NEW : Death toll rises to six as bomb kills two Iraqi soldiers in Iraq . Visit by Kuwaiti leader comes as Iraq works to improve ties with its Iraqi neighbors . Iraq has been asking Gulf states to waive debts from the Saddam Hussein era . Iraq visit by Diyala province 's king 2003 was first by Arab head of state since 2003 war .