Tight security at Shenzhen court for hearing into execution-style killing of millionaire Harry Lam A Hong Kong businessman and former TV actor went on trial in Shenzhen yesterday for allegedly ordering the murder of millionaire Harry Lam Hon-lit at a Central tea house four years ago. Yeung Ka-on, chairman of Yeung's Holdings appeared in Shenzhen Intermediate People's Court with seven other defendants - four from Hong Kong and three mainlanders. Yeung, who was arrested in Shenzhen last December 2, is the latest Hong Kong resident to become involved in the case. He is alleged to have paid triad boss Lau Yat-yin, 47, to kill Lam, but Yeung's motive has not been spelled out. Yeung and Lau have been charged with murder along with fellow Hong Kong residents Tse Bing, 47, Ho Ho-fu and Tsui Ming-yeung, and mainlanders Yang Wen , 27, and Zhang Zixin, 22. Another mainlander, Wu Weiwu , 25, has been charged with providing accommodation to criminals. Lam, 54, a director of Hong Kong-based Digger Holdings and an investor in the Mission Hills Golf Club in Shenzhen, was killed with a single bullet to the head in the Luk Yu Tea House on November 30, 2002, as he ate breakfast. The execution-style killing in Hong Kong's busiest district shocked the public. Yesterday's trial was conducted under tight security and in secrecy. Armed police guarded the court entrance. Only people with permits issued by court authorities were allowed to attend the trial, and many relatives and friends of the defendants had to wait outside. According to a summary of the charges obtained by the Guangzhou-based Southern Metropolis News, Yeung first approached Lau - a longtime friend and a fellow stuntman - in the summer of 2002 to plan the murder. He allegedly asked company employee Ho and driver Tsui to hand Lau a picture of the victim and some information about Lam's daily routine. Lau, said to be a boss of a Hunanese gang in Hong Kong, subsequently paid HK$2 million to Tse on October 2002 to recruit contract killers on the mainland. Tse hired Hunan province natives Yang and Zhang at a bar in Shenzhen in November 2002. He allegedly paid HK$400,000 to the killers. Yang and Zhang bought fake identification documents in Shenzhen and travelled to Hong Kong on November 27, 2002, it is claimed. They twice tried to ambush Lam on November 28 and 29, the summary said. The killers allegedly followed Lam to the Luk Yu Tea House on November 30 and shot him. The two are said to have escaped to Shenzhen via Zhuhai after the killing. Yang and Zhang were arrested in Hunan a month later and Tse was arrested in Yunnan province . Lau was arrested on November 18 , 2003 in Shenzhen. The summary said Yeung aroused investigators' suspicions after asking Ho to send HK$20,000 every month to Lau's family after the triad boss' arrest. Mainland police eventually arrested Yeung, Ho and Tsui at a karaoke bar in Shenzhen last December. Friends and relatives of the defendants yesterday criticised the Shenzhen court for not allowing them to attend the trial. 'It is unfair and unreasonable. My brother's daughter now may never have the chance to meet her father,' said Zhang's brother. A lawyer representing Wu described the court's arrangement as unusual but said the process was legal. The trial continues today and tomorrow.