Case could involve evidence that lies beyond scope of local courts and is eventually handled by mainland Chinese authorities, experts say A joint operation by Beijing's national security arm in Hong Kong and the city's police could be the first step in an investigation into an unusually complex collusion case that is ultimately handed over to mainland Chinese authorities,

Hong Kong invoked national security laws to ban a video game for the first time, broadening the use of the set of legislation to fend off perceived threats and requiring internet service providers to comply.