A pair of alleged tricksters said to have preyed on businessmen by spiking their drinks and then robbing them have been tried along with a teenage relative in Guangzhou for the robbery and murder of a Hong Kong-based media executive. A Guangzhou Intermediate People's Court official said the trial was held last Thursday. No verdict has been reached. Geng Weimin , the deputy director of broadcaster China Entertainment Television, was robbed of his watch, mobile phone, palmtop and laptop computers and more than 30,000 yuan in cash, then killed in a Guangzhou hotel. Reports said he had arranged to go on a date there with a woman he had met online. Once at the Huaan hotel, in the city's Yuexiu district, the woman, Zhou Fangping, 22, and Wang Baochen, 22, allegedly made Geng drink spiked beer. When he lost consciousness they took him to a room and robbed him with the help of Zhou's cousin, a 16-year-old boy who was not identified, the reports said. The trio, who are from Jiangxi province , stripped Geng, tied him up and made him reveal his bank card PIN at knifepoint, the court heard. He was killed the next day when he started shouting, alarming the teenager, who lost his cool and stabbed Geng a dozen times, the court heard. Wang and Zhou allegedly were repeat offenders who had been operating in Fujian province before moving to Guangzhou.