The FT reported, citing unnamed sources, that the two firms are stablecoin issuer Tether and its affiliated exchange Bitfinex.

Capstone illegally moved money at the direction of Dominica-based bank EQIBank, the report said, citing a civil justice complaint filed by the Justice Department in California.

Justice Department prosecutors in the Eastern District of California froze $84 million in Capstone’s accounts at two banks, and the FBI executed a search warrant at the Sacramento, California, home of Capstone owners or controlling persons Kotaro Shimogori and Mary Jeanne Thompson, per the report.