A NIGHT on the town nearly became a bloodbath for revellers caught in the middle of a triad gang war, the District Court heard yesterday. For Sun Yee On members plotted to blow up a Chungking Mansions nightclub after an argument with a hostess got out of control, said prosecutor Mahinder Panesar. But their plan to bomb the giant complex was foiled by an undercover policeman hiding in their midst. Yesterday, Tsang Ting-yat, 30, pleaded not guilty to conspiracy to cause an explosion. Trouble broke out when Tsang went to the China Palace Night Club with some friends on February 22 last year, the court heard. At about 5 am, he got into a row with a hostess who threatened to summon her triad protectors after Tsang allegedly slapped her. Tsang's friend Ah Tung was said to have retorted they were themselves high ranking members of the Sun Yee On triad society. At that moment, two bouncers arrived and warned the trouble-makers the club was under the protection of Wo Shing Wo triad society, Ms Panesar said. Suddenly, Tsang and his friends were surrounded by 20 men. In the heated argument that followed, two of them were said to have whipped out machetes and threatened Tsang and his group. Serious violence was averted when the club's general manager showed up and calmed the men, the court heard. Hopelessly outnumbered, Tsang and his friends left shortly afterwards, heading for the Tung Cheuk Recreation Club to plot their revenge. It was then that they decided to plant two bombs in the nightclub. One of the group said he knew someone in Macau with an international explosives licence. Another, named as Tony, offered to get help from a stuntman friend who knew how to make bombs. Ah Tung agreed to provide the fish bombs from which they could extract the dynamite. Ah Tung was said to have vowed: 'As we were made a fool of so seriously tonight, I must blow that group of people to death.' Tsang suggested they make an effort to avoid casualties to minimise police scrutiny. The court heard the gang members agreed to plant their bombs in out-of-the way places, such as flower pots and toilets. But one of them was said to have remarked that 'even if some people were blown, it cannot be helped'. Ah Tung then informed his co-conspirators that their primary goal was to threaten their adversaries, the court heard. 'In case a similar thing happens again, next time we will blow up that place totally,' he was reported to have said. But the would-be bombers had no idea one of their numbers was a policeman, said Ms Panesar. That night, the three gang members and the undercover officer met again to work out the final details of their plan. The court was told that by February 23, the wheels had been set in motion: the expert had already been called from Macau, and the explosives were waiting for him. The trial continues before Judge Lugar-Mawson.