TWO policemen who opened fire in a stairwell said they were not sure if they hit a man even though he stood less than two metres from them. Sergeant Chu Sik-wing told an inquest yesterday he did not aim when he saw suspected robbery gang member Chow Wai-ping reach into his waistband for a gun. He said he fired once and was not sure if he hit Chow, 37. He and his back-up partner, Constable Tsang Kwong-yeung, each fired another shot as Chow moved out of the staircase and into the seventh-floor corridor of the Workingmond Commercial Building in Tsim Sha Tsui. According to police testimony, Chow, who died of a gunshot wound to the head, immediately ran down the hall after the shots were fired at him, leaving a trail of blood. Sergeant Chu said he saw Chow standing at the far end of the corridor near a window. The next time he looked out from the stairwell, the hallway was empty. Chow's body was found lying on an outdoor, third-floor podium under the window. Beside the body, police found a Chinese-made Black Star 7.62 mm automatic pistol. 'I fired one shot and I saw some movement, some shaking of the body,' Sergeant Chu said. 'I heard my team member [Constable Tsang] order him to drop the gun. My team member and I fired one shot at the same time. 'I went to the window and looked at the bloodstains on it. Then I saw a man lying on the third-floor podium.' The police were waiting in ambush in the building on April 28 last year. A two-month investigation had led them to the Tsim Sha Tsui building, where a gang of armed men were planning a robbery. Pathologist Dr Yu Hon-wai's report said Chow was hit by two, possibly, three bullets. One bullet entered Chow's left temple, ricocheted off the skull and 'came out through the left temple at the entry wound'. He said the cause of death was 'a gunshot to the head'. Dr Yu said it would be difficult to predict if Chow had died instantaneously from the head wound. 'There is a variable degree of movement,' he said. 'It is likely a person would die shortly after.' The pathologist speculated that either one bullet could have cause the wound to Chow's arm and then glanced across his chest, or Chow could have been hit by a third bullet which creased his chest. Ballistics expert John Heard could not confirm which bullet killed Chow. The inquest continues today before Coroner John Saunders.