Authorities in Taiwan disrupted two major China-facing online gambling networks as part of a massive coordinated assault against criminal syndicates last Friday.

Taiwan’s Criminal Investigation Bureau unleashed its full fury against members of the Four Seas Gang and the Bamboo Union last week. A total of 6,470 officers raided 164 locations linked to gang activity, resulting in the arrest of 108 suspects, including six high-ranking members of the two gangs.

At the same time, an additional 5,889 officers raided scores of locations in which illegal gambling activity was taking place, with the intention of depriving the gangs of one of their chief sources of income.

The raids took place in all of Taiwan’s counties and major cities, and targeted all forms of gambling, including illegal casinos, sports betting pools, underground Mark Six lottery operations and other gambling dens.