 Breen, despite his gunshot wounds, managed to stumble out of the car, waving a white handkerchief at the gunmen in an apparent gesture of surrender.According to eyewitnesses, one of the gunmen walked over to him, told him to lie on the ground and fired a shot into the back of his head, killing him instantly.Another gunman then approached Buchanan's already dead body in the car and shot him again in the side of the head at point-blank range.