Iraq clashes 'kill 250 militants' US and Iraqi troops have killed about 250 militants in fierce fighting around the holy city of Najaf, police say. The battle raged all day as US-backed Iraqi army units fought the previously unidentified group in orchards on the northern outskirts of Najaf. Three Iraqi soldiers had reportedly died in the battle and 21 were injured. The US military said two of its troops died when their helicopter was shot down, but did not confirm any of the Iraqi casualty figures. An Iraqi official in the Najaf governor's office told the BBC that 21 Iraqi soldiers had been injured in the clashes, which occurred in a neighbourhood called Zarqa, and the Iraqi army was sweeping the area. Unnamed Iraqi sources said that the insurgents were from a previously unknown militant group calling themselves the Army of Heaven, or Soldiers of Heaven. Asaad Abu Gilel, the governor of Najaf province, said that the gunmen had been intent on attacking Shia clerics and pilgrims marking the holy festival of Ashura. "They are well-equipped and they even have anti-aircraft missiles. They are backed by some locals," he said......................................................................Cnn interviewers report that things are so bad in Iraq many Shia believers are now saying it is the End of Days when the Iman will return during a time Chaos rules.