Two-year-old killed in bizarre murder-suicide in Sheung Shui A 21/2-year-old girl was snatched from her mother and thrown out the window of a ninth-floor flat by her uncle before he leapt after her in a murder-suicide case in Sheung Shui yesterday. Mok Ki-yan and her father's younger brother Mok Pak-ki, 27, who were found lying unconscious on the pavement outside Choi Wah House at Choi Yuen Estate, were declared dead at the scene by paramedics. Her mother, 28, who is a visitor from the mainland, ran downstairs shouting, 'My daughter was thrown down', repeatedly before she held the girl in her arms and wept, according to witnesses. Family relations were reportedly good. Mok Pak-ki, an interior decoration worker, had no history of mental illness, but the police suspected he might have had a hidden mental problem. A police source said he had recently been suffering from insomnia. Ki-yan was playing with her mother in the bedroom when the incident happened shortly after 10am. Her grandfather was also at home but her father, 28, also an interior decoration worker, was at work. Her grandmother had gone to a market. Her uncle, who had returned to his bedroom after breakfast, walked out and entered the girl's room. He picked up the girl and took her out of the room. Police said the girl's mother did not suspect anything was wrong because he had often played with the girl. 'Carrying the girl, he went straight to the balcony, pushed open the unlocked window's grille and threw the girl out of the window,' the police source said. 'Her mother ran out [of the bedroom] when her grandfather shouted for help. Five to 10 seconds later, the man also threw himself off the building. He did not say a word during the whole incident. 'Her mother and grandfather did not stop him because they were very shocked and froze on the spot. It happened all in a flash.' The source said the whole incident took less than 20 seconds. A witness, surnamed Ng, said he heard a loud bang and found the girl lying motionless on the pavement outside the building. 'When I looked up, a man had jumped out of the window and was falling down,' he said. 'After a while, the girl's mother ran out of the building, in pyjamas. She held the girl in her arms and sobbed.' He said the woman's clothes became soaked with blood. The girl's mother and grandmother were so distressed they were later sent to North District Hospital for treatment. The Sheung Shui divisional police commander, acting Superintendent Daniel Ng Ho-fung, said officers were still investigating the reason behind the murder-suicide. 'Up to this stage, our investigation has showed that the family had a good relationship,' he said. Police said there had been no previous reports of domestic violence or disputes involving the family. Detectives from the Tai Po district crime squad are investigating the case. An autopsy will be carried out. Expressing concern over the family tragedy, a Social Welfare Department spokesman said social workers had offered counselling to the family, and were also checking if the family needed financial assistance. In the first three quarters of last year, there were 644 reports of child abuse, compared with 675 cases in the same period of 2007. Lee Sing, a professor of psychiatry at Chinese University, said it was possible for a person to suffer from a mental illness that his or her family did not know about. Mental patients commonly have hallucinations and talk to themselves. Some have delusions of being spied on, or become quieter and numb to people and events around them. Often, their work and social functions are affected, he said. Insomnia is also one of the symptoms. Professor Lee said he had not heard of a case in which a mental patient threw his or her sibling's child out of a window. Professor Lee said community services for mental patients were inadequate and he called on the government to provide more resources to help them. On Thursday, an elderly man who was released from a mental hospital about six months ago leapt to his death from his flat in Tsing Yi after slashing his wife's neck with a fruit knife. On November 27, a woman was suspected to have strangled her daughter, 13, and son, 17, before leaping to her death in Wong Tai Sin two days after she was released from a mental hospital.