A former priest accused of indecently assaulting a teenage boy in a church dormitory said through his lawyer yesterday that he would plead not guilty to the four charges against him at a future hearing. Michael Lau Ka-yee, now an insurance agent, faces three charges of indecent assault and one of procuring an act of gross indecency. The assaults are alleged to have occurred in a church dormitory a decade ago. No formal pleas were entered, but barrister Bernard Chung Wai-keung, representing Lau, 42, told Judge Maggie Poon Man-kay his client would be entering not-guilty pleas on all the charges. The offences were allegedly committed on January 4 and 5, 1991, and on an unknown date in July 1992. The alleged victim is now 26 years old. The District Court also heard that his alleged victim had suffered from mental illness. Mr Chung said a full medical history of the alleged victim had to be compiled in order for the defence to prepare its case. Because of this and because he needed to seek evidence on Church law, the case was not ready to proceed, the barrister said. 'The accused has not made any confessions under caution. But I understand the prosecution will refer to ecclesiastical law in relation to his alleged confessions to the Church. In this respect we are going to engage an expert on Church law,' Mr Chung said. He said he understood from the prosecution that the alleged victim had suffered from mental illness and had received in-patient treatment at Castle Peak Hospital. 'No information apart from those few words was given in this respect,' said Mr Chung, adding he was waiting for a full disclosure about the alleged victim's medical history both in Hong Kong and in the United Kingdom, where he is believed also to have received treatment. Prosecutor Michael Wong said eight witnesses would be called but the witness statement of Father Chiu Bit-shing, one of the scheduled witnesses, had yet to be taken as the priest was in the United States. Mr Wong said the statement would be ready in about a month. The judge asked whether fixing a trial date six months from now would be appropriate, but at Mr Chung's request adjourned the case until September 9 for a pre-trial review.