A POLICEMAN who robbed and sexually assaulted a woman after kidnapping her and tying her to a bed was yesterday jailed for 111/2 years. Constable Raymond Tung Wai-leung, 29, who also worked as a part-time taxi driver, abducted his victim after she hailed his taxi outside a Kowloon-Canton Railway station. But what began as a 10-minute ride home turned into a 30-hour nightmare when Tung suddenly jumped into the back of the taxi and threatened her with a knife. He then bound, blindfolded and gagged her and put her in the boot of his taxi, the High Court heard. He drove his victim to a hut in Mai Po where he stripped her, tied her to the bed and sexually assaulted her. He eventually released her for a $50,000 ransom. The former constable, who had an 'exemplary' eight-year service record, has been expelled from the force. Prosecutor Albert Wong told the court how Tung picked up the woman, 27, late on January 23 this year. Once at the hut he left her tied up and blindfolded on the bed while he drove to Tai Po where he withdrew $9,000 from her account with one of her bank cards. When he returned, he indecently assaulted her. Tung then telephoned the victim's brother and demanded a $300,000 ransom which dropped to $50,000. The following day he bundled his victim into the taxi boot and went to collect the ransom money. Tung then dumped the woman in Tai Po after withdrawing a further $9,000 from her account. Passing sentence, Deputy Judge Pang said: 'Law enforcement officers should expect no mercy from the courts when they violate the citizens whom they have sworn to protect. 'Not being satisfied with your loot from the robbery you subjected the woman to unnecessary violence and indecency in the hope of extracting the maximum monetary benefit from her. This is why I find your conduct so horrible.' The former officer was jailed for 111/2 years after admitting robbery, forcible detention, indecent assault and five counts of theft. He denied a ninth count of attempted rape which was left on file. Tung's wife sat in the public gallery with their two young children, but did not comment as she left court. Defence counsel Paul Tong said Tung carried out the robbery after amassing massive gambling debts of around $230,000. He added: 'It's a classic case of human tragedy. What he did destroyed not only his career in the police force but devastated his own young family.' Mr Tong said Tung was genuinely remorseful.