Policeman explains how colleague grabbed gun and shot sergeant A police officer involved in a struggle with a colleague in an Aberdeen underpass told a court yesterday how a third officer was shot in front of more than 20 pedestrians. Former constable Suen Wai-leong, 39, is on trial in the Court of First Instance on a count of using a firearm to resist arrest and another of wounding stemming from an incident on September 6. He was ordered in September to be remanded at a psychiatric centre. It was alleged Suen wounded station sergeant Wong Siu-pang when he grabbed and then discharged a service revolver belonging to Constable Ng Siu-chung during a struggle. Wong suffered a gunshot wound to his inner right thigh and scrotum. The court heard Wong died from a heart attack less than a month later. According to senior assistant director of public prosecutions, Francis Lo Hing-cheung, Wong's death was unrelated to the shooting. The jury was told that on the morning in question, one of Suen's sisters reported him missing. He had last been seen around Aberdeen, said to be wearing hospital clothes. Wong was a member of the Police Tactical Unit and had, along with Constable Ng and the rest of the unit, been briefed to be on the look-out for Suen and another missing person while on their evening patrol. Constable Ng told the court that as they were being driven from the station by Senior Constable Ip Ping-kuen, they received a report of a suspect running away near Wu Nam Street, Aberdeen. They rushed to an underpass where they believed the suspect might be heading. Once there they saw a man dressed in blue running towards them, weaving through about 20 people in the underpass. Wong tried to stop the man, later identified as Suen. 'Sergeant Wong grabbed at him and yelled: 'Hey, stop running!' But [Suen] didn't say anything but struggled to break free and then ran in my direction,' Constable Ng said. 'I tried to intercept him with both my hands. I put them both on his shoulders to restrain him but he grabbed me around the waist.' The pair grappled against the wall of the underpass. Constable Ng said he had the impression Wong was nearby but was too caught up in the struggle to be sure. 'I tried to wrench myself away from him but I failed. Then I felt the revolver at my waist had moved.' He said he immediately moved to protect the holster but found the gun had already been withdrawn. 'All I could do was hold [Suen's] wrist. I tried hard to push the revolver down so the muzzle was pointing at the ground so as to prevent bystanders being hit if it discharged.' He then heard a shot and heard Wong saying: 'Oh! I've been shot.' Constable Ip arrived and helped subdue Suen. Constable Ng then rushed to his colleague's aid. He saw Wong's inner right thigh was bleeding and rushed to the van to retrieve a first aid kit. It was only after the struggle that they discovered Suen's identity. The trial continues today before Madam Justice Clare-Marie Beeson.