The failed attempt to blow up a Tsim Sha Tsui East nightclub was the second time premises of the club's owner had been the target of a bombing plot. Several members of the Sun Yee On triad were jailed in 1995 for their part in a conspiracy to bomb the now defunct China Palace Nightclub in Chungking Mansions. The China Palace was owned by Tsim Sha Tsui entertainment business figure Ma Yuk-wan, who amalgamated it a year ago to form the New Flower City Nightclub in Hilton Towers, the target of Monday's 500-gram bomb. The revelation came as Chief Secretary for Administration Anson Chan Fang On-sang said the Government was determined to track down those responsible. 'It is important for us to send a clear message to the culprits that this sort of incident will not be tolerated by the Government,' she said. Mrs Chan's comments were followed by a decision from police headquarters last night to transfer the investigation to the Organised Crime and Triad Bureau. OCTB Superintendent David Ip Wai-keung confirmed triad involvement was suspected. Police were seeking information on the 1995 conspiracy. 'We are now looking into the background to that case. The investigation is being taken very seriously'. The China Palace plot was foiled by evidence gathered by an undercover police officer who had infiltrated the Sun Yee On triad. The attack was in revenge for a stand-off in the China Palace between Sun Yee On members and rival Wo Shing Wo gangsters who were protecting the club. It is thought several of those convicted in 1995 have been released from custody. Senior Bomb Disposal Officer Dominic Brittain said the explosive used in the New Flower City device was ammonium nitrate. The device was not fitted with a detonator and had probably been intended to cause damage to the club rather than hurt or kill people. Detective Superintendent Lo Wai-chung, in charge of the initial investigation, said the bomb would have destroyed the club and caused serious injury or death to anyone within 1,000 square metres.