The figures were given on Monday in a statement by the Office of the Secretary for Security of the Macau government. The office did not give details on those detained, but said the detentions followed investigations into 387 cases involving “illegal money exchange”. The criminalising of gaming-related unlicensed money exchange has been “effective” in combatting such activities, said the city’s Secretary for Security, Wong Sio Chak, in late April. The rise was mainly driven by cases of gaming-related unlicensed money exchange, he stated at the time. The announcement said it probed 62 cases of “illegal money exchange” for gambling, resulting in the detention of 100 individuals.