Macau police have arrested 110 men and women from mainland China after raids at several resorts on the Cotai Strip over the weekend, local media reports.
The detainees were suspected of illegal currency exchange and other activities.
The raid was coordinated by the Unitary Police Service and jointly carried out by the Judiciary Police and the Public Security Police.
The operation took place after a fight involving about 10 men outside the Venetian last Wednesday that was captured on video and circulated online, the report said.
The report did not mention where the raids took place.