Hong Kong has started deploying drones to detect illegal refuelling stations in the city, with the Fire Services Department having seized diesel worth more than HK$6 million (US$772,362) in the past month during a crackdown on 23 locations. Bradan Kwok Chi-kwan, divisional officer for dangerous goods enforcement, said the department introduced drones to help uncover illicit operations last month and conducted 41 flights. “When our drone squad detects suspicious activity, it alerts task force...