A MAN who had sex with a girl three days before her 16th birthday has admitted to a charge of unlawful sexual intercourse. The offence came to light when the girl asked her sister-in-law about the signs of pregnancy, the High Court was told. Plastic mould technician Chan Ho-kei, 23, was originally accused of rape, but he denied the charge and admitted the lesser offence. The plea was accepted by the Crown and Mr Justice Leong who yesterday adjourned sentencing to January 6 for a background report. Counsel for the Crown, Dee Crebbin, told the court the girl was introduced to Chan by a friend over the telephone in May last year. They subsequently spoke regularly on the phone but did not meet until April this year when they started seeing each other about twice a week. On May 26, they went out for lunch before returning to Chan's Kwai Chung home. After watching pornographic films together, Chan started to make advances to the girl. She initially tried to stop him but he proceeded to remove their clothes and she did not resist when he had sexual intercourse with her. The girl left about 5 pm and, after wandering the streets until 10 pm, went to spend the night with her sister-in-law. Three days later, she telephoned her sister-in-law to ask about pregnancy. She also revealed what had taken place but said that since she had never had sexual intercourse before, she did not know exactly what had happened. She was then taken to the Family Planning Association and a report was made to the police, which led to Chan's arrest.