Nineteen people from mainland China were arrested in Macau on Wednesday on suspicion of operating an illegal VIP gambling room in a city hotel.

According to a GGRAsia report, which quoted public broadcaster TDM, the hotel involved was located in the NAPE district, and the arrested people had been playing roles as security guards, dealers, VIP hosts, VIP room operators and gamblers.

Members of the Macau Judiciary Police also found four alleged customers in the hotel during the raid, according to the report.

Authorities suspected that the group had been running VIP rooms in different locations in the special administrative region for the past two years.