A TRIAD accused of plotting to bomb a nightclub was cleared in the District Court yesterday because of inconsistent testimony by the star witness, an undercover policeman. Tsang Ting-yat, 30, was acquitted of conspiring to cause an explosion at the club in Tsim Sha Tsui after Judge Lugar-Mawson said there were discrepancies in the evidence of the officer who had infiltrated the Sun Yee On triad. On February 22, Tsang, the policeman and members of the Sun Yee On went to the China Palace Night Club in Chungking Mansions. Tsang got into an argument with a hostess which developed into a face-off with a gang of machete-wielding members of the Wo Shing Wo triad. Later that morning, the policeman claimed, Tsang hatched a plan to blow up the China Palace. But Judge Lugar-Mawson said he doubted the accuracy of the officer's notes taken eight hours after the plot and other notes written several days later. The explanations given by the officer for the inconsistencies on cross-examination 'were not very convincing'. 'It is unsafe to place full reliance on his verbatim conversations,' he said. 'The Crown said those are minor inconsistencies and should be overlooked. But this matter caused me considerable anxiety.' The inconsistencies - over dates and words spoken during Tsang's late night discussion - gave weight to the argument by defence counsel Michael Poll. 'Mr Poll's cross-examination has introduced serious doubts and it is not fanciful to wonder if [the witness] was willing to attribute certain words [to Tsang] and mis-attribute others,' said the judge.