A mentally ill man who pushed a commuter into the path of a moving train had waited months for a psychiatric appointment and was trying to be admitted to hospital on the day the tragedy occurred. Chan Chi-kwan, 28, was on his way to the Social Welfare Department when he suddenly charged at a stranger on a Kowloon Tong station platform and pushed him in front of a train, a court heard. Computer programmer Ngai Ka-chuen, 27, was struck by the train and flung against an advertising hoarding and on to the tracks. His right leg was amputated from the knee down and he is at risk of losing the ability to walk and function independently. Chan pleaded guilty at the Court of First Instance yesterday to one charge of wounding with intent to cause grievous bodily harm. Deputy Judge Louis Tong Po-sun adjourned sentencing to August 20 for fresh psychiatric reports. Chan's lawyer Kenneth Chan Gee-ming said the unemployed man had visited East Kowloon Hospital early in 1998 but was told he would not get an appointment until February this year. His lawyer said Chan is believed to be suffering from schizophrenia and had shown signs his illness was worsening. 'One could see the signs of the troubles of the defendant one year before the incident,' said Mr Kenneth Chan. 'He had trouble sleeping at night, he had frequent headaches and dizziness. He heard voices talking to him. He became irritated easily and had difficulties in controlling his temper. 'Some time in 1998 he got physical with his father and grandfather and he started to seek professional help.' Then on the morning of November 27 last year, Chan pushed Mr Ngai on to the tracks. MTR staff who did not witness the push came running to the platform where Chan stood with his father. 'The accused was staring at the train and remained silent when asked if he needed assistance. He said, 'I wanted to take the train, I did not push him on purpose',' prosecutor Johnny Chan Yue-chow said. A staff member thought Chan was referring to his father and asked if he had pushed him, to which the defendant replied, 'No, I pushed a person down there', the prosecutor said. Mainland-born Chan moved to Hong Kong in 1993 to join his father in the transport business but was unable to keep his job.