A father beat his daughter into admitting she had been sexually assaulted by a prison guard, the Court of Appeal heard yesterday. He began thrashing the 11-year-old after she refused to explain her sudden disappearance during a Tai Lam prison barbecue, at which they were guests. Wong King-fung, 22, had been found guilty of indecent assault and jailed for two years. He went to court in an effort to overturn his conviction. John Dunn, representing Wong, said the girl's story should not have been admitted as evidence because her father had beaten it out of her. 'There was a degree of intimidation,' Mr Dunn said. 'Violence was used.' On October 23, 1994, the 11-year-old went with her parents to visit friends at the prison. The family were frequent visitors, and knew most of the Correctional Services Department staff. When the Form One student began chatting with an officer she knew, he suggested they sneak away for a drive in a car. But while they were alone Wong asked if he could kiss her and then forced her to perform oral sex. The officer drove his victim back to the prison and left her. The girl had been missing for about an hour, and her parents were alarmed when she reappeared in a state of distress. She refused to tell them where she had been. Determined to get to the truth, her father drove the family home. Then he beat his daughter with a coat hanger until she confessed. Yesterday Mr Dunn said: 'A complaint which has to be dragged out of the complainant should not be admitted in court.' But Chief Justice Sir Ti Liang Yang, Mr Justice Noel Power and Mr Justice Brian Keith dismissed the appeal, saying 'the statement made by the girl was her unassisted and unvarnished story'.