The United States Financial Crimes Enforcement Network, or FinCEN, a bureau of the Treasury Department, has warned financial institutions to consider crypto as a possible means Russia may attempt to use to evade sanctions related to the country’s military action in Ukraine.

In a Monday alert, FinCEN Be reminded U.S.-based financial institutions “with visibility into cryptocurrency” and convertible virtual currency, or CVC, to report any activity that could be considered a potential way for Russia to evade sanctions imposed by the U.S. and its allies. While the U.S. watchdog said that the Russian government using CVCs to evade large scale sanctions was “not necessarily practicable,” financial institutions were obligated to report such activities from Russian and Belarusian individuals named in actions that many have dubbed “economic warfare.”