Macau authorities have broken up another online proxy betting ring that used the WeChat social media platform to stream live table game action from a local casino.

On Thursday, Macau’s Judiciary Police (PJ) announced the arrests of four local residents and 13 mainland Chinese for their suspected involvement in the illegal gambling ring, which streamed real-time action from a VIP baccarat table at an unidentified “Cotai casino.”

A PJ spokesperson informed local media that the proxy betting ring catered to a roster of mainland Chinese gamblers who were promised the ability to “play real baccarat games in Macau.” The ring, which is believed to have been operating for one year, offered “two to three” daily sessions of wagering activity, with each session involving roughly “40 to 50” gamblers.

Macau banned proxy betting – in which real-time table activity is relayed to distant gamblers via voice or video communications channels, and these gamblers respond with directions on how they wish to wager – in 2016 to comply with Beijing’s efforts to curtail capital flight.