A man who conned an old school friend into giving him $375,000 and tricked her into having sex with him was convicted of 14 charges yesterday. Chan Yiu-tung, 23, and four accomplices were found guilty by District Court judge Alan Wright but will be sentenced at a later date. Chan was convicted of six counts of obtaining property by deception, three of procuring another person for an unlawful sexual act by false pretences, one of procurement by threats to do an unlawful sexual act, two of blackmail, one of theft and one of conspiracy to defraud. Poon Kim-chuen, 25, was found guilty of conspiracy to defraud and resisting arrest. Cheng Tsz-ting, 21, Fung Shui-leung, 28, and Lee Chi-wang, 25, were convicted of conspiracy to defraud. The victim, who cannot be named for legal reasons, told the court that Chan repeatedly borrowed money from her from December 2002 until May last year. She said Chan had promised to repay $10,000, part of the loan, if she had sex with him and allowed another man to watch. Although the victim was earning only $6,900 a month, she took out loans from finance companies and borrowed from her mother and colleagues to raise funds for him. She said she was tricked and intimidated into having sex with Chan on four occasions.