BEIJING -- Chinese police have destroyed more than 6,600 hidden sites in a five-month-long nationwide campaign against food and drug crimes, according to official figures unveiled Thursday.

Launched in late July of 2019, Operation Kunlun saw the investigation of around 13,200 criminal cases related to food and drugs and the capture of 19,700 suspects.

Forty-five criminal groups were removed as a result of the campaign, according to central authorities. The authorities also jointly made public 15 typical cases related to food and drug safety Thursday.