Police in eastern China have busted a 7.8 billion yuan ($1.1 billion) online gambling ring and arrested 56 suspects, the official Xinhua news agency reported.

China’s Zhejiang Province arrested 63 people for organizing online football gambling involving around three billion yuan (438 million U.S. dollars).

Police in the city of Ningbo received a tip-off about a gang setting up online casino in April. An initial investigation showed that the gang was led by a man surnamed Dai and run by different levels of agents who deduct different percentages from the gambling money brought to the website.

In July, the police launched a raid and apprehended 38 suspects. So far, police have captured 63 suspects, with around 10 still at large.

Police have also confiscated 2.25 million yuan of illegal income and frozen 5 million yuan in their bank accounts. The total illegal income reached more than 30 million yuan, police estimated.