The police raided 11 different locations linked to the ring run by 43-year-old Truong Hoang Lam, saying it was the biggest gambling ring ever busted in the area.

Investigation found the ring start operation in 2014, Vietnam’s cyber crime police under the Ministry of Public Security said on Tuesday. Sunday's raids netted more than VND 2.6 billion ($112,000) and $12,000 in cash, 17 computers and other items. The police are investigating further.

Vietnam has relaxed its stance on gambling as a "social evil," legalizing sports betting in 2017 and allowing people aged over 21 with a monthly income of at least VND10 million ($445) to play in a casino in the southern Phu Quoc Island.

But online betting remains illegal.