A Russian law firm says it can help Mt Gox creditors recover up to $2 billion worth of bitcoins stolen in the 2014 hack.
Prosecutors have filed a complaint against the infamous crypto exchange BTC-e calling a haven for crime.
Dmitri Vasilev, the former CEO of now-defunct crypto exchange WEX, has reportedly been arrested in Italy.
Alleged bitcoin launderer Alexander Vinnik, who is wanted by several countries, has filed in Greece for extradition to Russia.
Cryptocurrency exchange WEX, formerly called BTC-e, may have been used to launder illicit gains from the SamSam ransomware, according to PwC.
Binance has frozen accounts that received more than 93,000 ether (over $18.9 million) from wallets indirectly linked to troubled Russian exchange WEX.
Users of the WEX exchange have begun filing police reports after more than three months of being unable to withdraw major cryptocurrencies or fiat.
Cryptocurrencies are ill-suited for terrorist financing, a member of a think tank told the U.S. House of Representatives last week.
Crypto exchange WEX continues to see prices well out of step with the rest of the market amid the continuation of a near-total freeze on withdrawals.
In a legal tug-of-war between France, Russia and the U.S., Greek courts have ruled in France's favour to take over custody of Alexander Vinnik.