Hong Kong police have arrested seven people in connection with a robbery involving six gold bars worth HK$7 million (US$893,102), with some suspects believed to have fled to mainland China. The force said on Saturday that four men and three women were arrested on Thursday after a 36-year-old man reported that he had been robbed at about 12.30am that day at a car park at the airport. According to the victim’s account, he had been hired by a Chinese businessman to transport six 1kg (2.