Four people appeared in Eastern Court yesterday for allegedly conspiring to defraud the Food and Environmental Hygiene Department in seven cleaning contracts worth more than $106 million. The defendants were Ha Kam-kaye, 71, general manager of Wai Hong Waste Management, Wong Siu-sing, 42, operator of A&T Service Company, Ng Wai-ming, 38, proprietor of Ming Kee Cleaning Services, and Tam Man-kwong, 56, proprietor of Wai Shing Cleaning Company. Ha faced three counts of conspiracy to defraud, while the other three were each charged with one similar offence. No pleas were taken and Magistrate Ian Candy adjourned the case until November 3 pending transfer to the District Court. The Independent Commission Against Corruption says Ha's company recruited A&T, Ming Kee and Wai Shing as subcontractors to carry out Food and Environmental Hygiene Department cleaning contracts for Wai Hong. The charges allege Ha and Wong conspired with other persons to defraud the department by falsely representing that Wong and the cleaning workers recruited by him were all employees of Wai Hong. The department requires that its cleaning contractors shall not subcontract any part of a cleaning contract to others without its approval. The alleged offences took place between June 2001 and October last year. The ICAC said its inquiries revealed that the seven cleaning contracts involved were valued at more than $106 million. The defendants are on ICAC bail and have been ordered not to interfere with prosecution witnesses.