A brothel owner who bribed senior policemen had his jail term tripled yesterday, five days before he was due to be released. The Court of Appeal increased Chan Kin-keung's four-month sentence to one year after the Crown said tougher penalties were needed to combat corruption. Chan, who was due to be released on Tuesday, paid a corrupt inspector and a sergeant more than $100,000 to reveal the identity of police decoys at his Mongkok vice establishments. He was jailed for four months by District Court Judge Ian Britton last December, who said he regarded the case as exceptional because the officers demanded Chan pay the bribes. Mr Justice Charles Ching agreed the officer had 'put the frighteners' on Chan. But Ian McWalters, for the Crown, argued the four-month sentence was far too low. He said the starting point for corruption sentences, before mitigating factors were taken into account, should be at least a year. 'There has been much publicity . . . of a re-emergence of corruption in Hong Kong as we go through the transition period,' Mr McWalters said. Chief Justice Sir Ti Liang Yang said the starting point for Chan's case should have been three years. He reduced it to 12 months because of his plea of guilty, the fact that the police solicited the bribes, and because Chan was due for release.