Military prosecutors have granted immunity to at least seven US Marines who may be called to testify at the trial of fellow troops accused over the killing of 24 Iraqi civilians in Haditha.

Iraqi witnesses today recounted how seven US Marines and a Navy corpsman kidnapped an Iraqi man from his home and shot him dead.

The US military has launched a criminal investigation into photographs that appear to show US Navy SEAL commandos in Iraq sitting on hooded and handcuffed detainees, it emerged today.