Investigators found scammers involved in human trafficking.

The group is believed to have hit more than 50,000 victims.

"Operation Eagle Sweep" is the latest crackdown on business email compromise (BEC) scams by international law enforcement.

The operation — with help from Palo Alto Networks' Unit 42 as well as cybersecurity firm Group-IB — marks the second action against the group.

The sting also intercepted $27 million in illicit funds.

Outsiders suggested REvil was the target of the police said, which involved the FBI.