Policeman volunteered to answer the fatal complaint that Tsuen Wan station first received on an internal line The last hours of the life of police constable Leung Shing-yan were laid out for a coroner yesterday as an inquest began into his death and those of three others, including two other policemen. The events began mundanely enough, Coroner Michael Chan Pik-kiu and a jury heard, when Leung swapped his lunch time with a colleague, leaving him free when the fatal call to investigate a noise complaint at a Tsuen Wan public housing estate came in. Leung had volunteered to investigate the complaint at Shek To House, Shek Wai Kok Estate, where he was later found dead in a fifth-floor corridor with his service revolver, magazine and bullets, and his notebook missing. The inquest is looking into the deaths of Leung, security guard Zafar Iqbal Khan during a robbery and constables Tsang Kwok-hang and Tsui Po-ko - who died in a shoot-out in Tsim Sha Tsui last year. The inquest, before a jury of three men and two women, is expected to take 37 days. Leung, described by family and friends as a filial and approachable person who sometimes gambled, owed tens of thousands of dollars in credit card debts and to the police credit union, the court heard. He went on his fatal errand on March 14, 2001, after a telephone call from a complainant 'Mr Tsang' about 12.05pm over stereo noise from a flat in Shek To House. Constable Lai Wing-fai, who took the call, said he then called via the beat radio system to another constable, Chan Chi-kwan - who, the court heard, had earlier swapped his lunch time with Leung. Constable Chan had said he was about to have lunch and could not handle it. 'Leung replied to me through the system that he had already finished his lunch and would attend the scene and investigate the complaint,' said Constable Lai, who said that only these two constables were responsible for patrolling the estate on the morning shift that day. Constable Lai said the caller spoke very clear Cantonese in a calm voice that could have been that of a man aged 20 plus. The court heard that the complaint call first came into the Tsuen Wan police station through an internal phone line - instead of a general report line which outsiders normally use - before it was referred to Lei Muk Shue police station where Leung was working. Constable Siu Man-kei said he received a call from a 'Mr Tsang' on March 14 in the report room of Tsuen Wan police station and he told Mr Tsang the telephone number of Lei Muk Shue police station when he realised Shek Wai Kok Estate did not belong to Tsuen Wan Division. 'I have never received any call from outsiders through this [internal] direct line,' Constable Siu testified, adding that Mr Tsang's voice was low and the background quiet. Lei Muk Shue police station had received a bogus complaint about television noise in Lei Muk Shue Estate a day earlier, the court heard. Constable Lam Chun-fai told the coroner he had answered a call from a 'Mr Chan' at about 12.10pm on March 13, but it was confirmed to be a false claim after a check at the scene was conducted. Constable Lam said he could not reach Mr Chan when he tried to call the mobile phone number the complainant had given him. 'It is relatively rare to receive a phone-in complaint of noise in the afternoon,' he told the court. Inspector Lam Yam-man said he received a report by radio at 12.30pm on March 14 that an officer in uniform had passed out and the sound of gunshot had been heard. He found Leung lying dead on the fifth floor of Shek To House about eight minutes later. 'He looked very pale and his left eye was punctured. His holster pouch was emptied.' Inspector Lam also testified that Leung and Constable Chan had swapped lunch times because Leung had had a morning interview with a victim and had taken his lunch at the station afterwards. Constable Chan had taken the later lunch slot. The swap had been approved by a station sergeant. Since Leung's death, callouts of officers had been done via the station console instead of directly by the report room duty officer, he said. Reconfirmation of callers' identities and complaints were now carried out every time the report room received calls. Coroner's officer Arthur Luk Yee-shun SC indicated that he would call four police officers, among 110 witnesses, today and a site visit would be arranged at Shek To House this afternoon.