It is being reported that the UK and the US are undertaking a joint investigation into $20 billion in crypto currency transactions said to be in breach of Russian sanctions.
The payments under scrutiny flowed through the Moscow-based Garantex crypto exchange, utilizing the dollar-pegged stablecoin Tether.
The original story was published by Bloomberg, behind a paywall.
It is also being reported that the National Crime Agency and HM Treasury have provided no comment in relation to the investigation.