A computer expert jailed for Hong Kong's biggest forex fraud and then released because the charges had been wrongly worded will not face trial again. Prosecutors have abandoned a bid to proceed with new charges against Chan Kang-to, 35, arising from the alleged $194 million swindle. Mr Chan, who claimed to have invented a revolutionary computer system that could automatically play the forex markets, was jailed for eight years and fined $10 million in July 1995. Prosecutors alleged his claims were a sham and that money pumped into Evergreen International by 340 investors was pocketed by Mr Chan and accomplices. The Court of Appeal quashed his conviction for conspiracy to defraud after he had spent 20 months in jail. The wording of the charge was ruled to have been too narrow and there were said to have been gross irregularities at the trial. A bid to have the case tried again was rejected by the appeal judges. But two new charges alleging false accounting were laid and Mr Chan was re-arrested. These charges focused on allegations that bogus account statements had been sent to clients in a bid to cover up the alleged fraud. The trial was due to begin on May 18. But prosecutor Richard Turnbull told the Court of First Instance yesterday that the Government would be dropping the charges. He offered no evidence and Mr Chan, who has always denied the allegations, was cleared. A spokesman for the Department of Justice said: 'After a careful review of all the circumstances surrounding this case, including its background, it was concluded by the prosecution that the interests of justice would not be best served by placing the accused on trial for a second time.' Police are still hunting for Leung Kai-man and his wife, Ho Sheung-lin, in connection with the alleged scam.