Taiwan’s cyber-cops have busted yet another illegal online gambling ring piggy-backing on a Macau casino operator’s trademarks.

On Wednesday, the telecom division of Taiwan’s Criminal Investigation Bureau (CIB) announced the arrest of 29 individuals suspected of involvement in an illegal online gambling operation that catered primarily to customers in mainland China and other Asia-Pacific markets.

Acting on a tip, police raided an office complex in Taichung City where they discovered a major online gambling software design and technical support service. Police seized 57 computers, 102 monitors, 12 mobile phones, a number of bank cards and the equivalent of around US$20k in various currencies.

One of those arrested was an individual named Chen Nan, whom the CIB fingered as the mastermind of the gambling operation. Chen is said to have designed and managed over 30 gambling sites, which collectively handled a significant volume of wagers over the years.