A devoted son burned charcoal in an attempt to kill himself and his sick father, so that he could take care of him in 'another world', a court heard yesterday. The suicide pact - carried out by Ng King-wong, 41, but designed by his 73-year-old father, Ng Shui-ping - failed when the two men were rescued by another of the elderly man's sons, defence counsel Hanif Mughal said. Ng King-wong pleaded guilty before Mr Justice Peter Nguyen to one count of administering poison so as to endanger life. But Ng denied a charge of attempted murder, which was left on file and will not be proceeded with without a court order. Prosecutor Diane Crebbin told the Court of First Instance yesterday that the father and son were both found unconscious in their flat at Choi Wan Estate, Wong Tai Sin, beside a burning can of charcoal on July 14 last year. Mr Ng Snr, who was admitted to an old people's home in 1998, was brought to the Choi Wan flat on July 13 by his son. Ng King-wong asked his stepmother and brother to sleep that night in an adjacent flat the family also owned, leaving the father and son alone together. Ng King-wong sealed the flat's windows with adhesive tape and securely locked the door before lighting the charcoal, the court heard, but both men were rescued after Ng King-kang broke into the flat. After he was discharged from hospital on July 20, Ng King-wong admitted to police that he and his father had entered into a suicide pact, Ms Crebbin said. Examining doctors found both men were suffering from carbon monoxide poisoning, but recovered after treatment. Mr Mughal said Ng King-wong was not motivated by malice and would not have received any benefit from his father's death. His father, who suffered from hypertension, diabetes and Parkinson's disease, had repeatedly told him of his desire to die since his condition deteriorated in 1998. Ng King-wong lost his job as a truck driver last year after developing heart disease, Mr Mughal said. Although the man had read reports about people killing themselves by burning charcoal, his father had suggested it. Apart from burning the charcoal, Ng King-wong cut his left wrist and forearm to ensure he would die quickly, showing a 'genuine intent' to kill himself. He also took precautions, including sending other members of his family next door, to prevent anyone other than he and his father from being put at risk, Mr Mughal said. Mr Justice Nguyen adjourned sentencing Ng King-wong until May 31, pending a probation report.