CONFUSION arose yesterday over whether alleged insider dealer Don Lau Yuen-leung had prior knowledge of the identity of the purchasers of Public International Investments Ltd (PIIL) shares before he bought a large block. Witness Lai Kim Leong told the Insider Dealing Tribunal yesterday that he had no recollection of what he told Mr Lau on December 7, 1992, a day before the announcement of a conditional offer for PIIL when Mr Lau purchased 240,000 PIIL shares through his relatives' trading account. Mr Lai earlier said during an interview with the Securities and Futures Commission (SFC) and to the hearing that he had advised Mr Lau on the offer, including the identity of the purchasers on that day. Mr Lai yesterday said he could not remember how he made his reply at the SFC interview but that it was generally based on the sequence of events as well as his memory at that stage. Asked whether he told Mr Lau the identity of the purchasers on December 7, 1992, Mr Lai said: 'I cannot remember exactly. As I appointed him as the financial adviser, logically I should tell him the whole story.' Pressed further by Mr Lau's counsel, Andrew Li Kwok-nang QC, Mr Lai said he had no present recollection of the matter and he could not remember his state of mind at the SFC interview. Asked whether he had based his earlier answer on the schedule of events put before him during the SFC meeting, Mr Lai said: 'That's a possibility. But I think my memory was better then than now. 'I cannot think of a reason why I should disclose [the identity of the purchasers] but I cannot think of a reason why I should not disclose [it].' Mr Lai said that because at that time he was already aware of who the parties were and he had to relay the information to the company chairman: 'I supposed when I met Don Lau I repeated the same thing. That's my assumption'.