In Iraq, gunmen have stormed the house of an anti-Al Qaeda tribal chief and killed his wife and children. Police said the Sunni militia member was not at home when the killings happened. <br/><br/>The armed men cut the throats of his three young sons and shot his wife and a daughter in the head. <br/><br/>The killings occurred late yesterday in Tarmiya, a mostly Sunni town 25 kilometres north of Baghdad. The area was once a stronghold of Al Qaeda before tribal chiefs turned on the group and allied themselves with US forces instead. <br/><br/>A police source says authorities believe the killings might have been a reaction to the deaths of Al Qaeda in Iraq's top two leaders on Sunday.