The BBC revealed earlier this week that a London-based firm called Always Efficient LLP is being linked to the laundering of funds stolen from bitcoin exchange Mt. Gox.
The Tokyo-based exchange was the victim of a hack a few years ago where it lost hundreds of thousands of Bitcoins. According to the FBI, the stolen cryptocurrency ended up in rival exchange BTC-e which is operated by Always Efficient LLP which is suspected to be a shell company.
Upon further investigation, the FBI says that a Russian man named Alexander Vinnik may be behind BTC-e. Vinnik was arrested in July 2017 while on vacation in Greece and is facing 21 counts of money laundering and other financial crimes in the US.