BEIJING, May 8 (Xinhua) -- Chinese police have cracked a number of cases in which suspects used online game platforms for gambling, the Ministry of Public Security said Tuesday.

In one case, police from Henan, Beijing and Guangxi captured 36 suspects involved in opening online casinos and froze more than 65 million yuan (10.2 million U.S. dollars) in a joint operation in April.

In another case, police in Zhejiang busted an online gambling den in January, with 52 suspects caught and 330 million yuan frozen, said the ministry.

"There are still a number of major cases under investigation," said the ministry.

The ministry pledged a continuous crackdown on gambling in a bid to safeguard social and economic security.