United States Department of Justice could bring criminal charges against U.S. citizens who may have violated cryptocurrency sanctions.

A Friday opinion filed in U.S. District Court for District of Columbia reveals that the Justice Department is investigating an unnamed person who is allegedly involved in a criminal investigation. SentOver $10 Million in (BTC) from a U.S.-based crypto exchange to an exchange in a country for which the U.S. currently imposes sanctions — suggesting Russia, Cuba, North Korea, Syria, or Iran. The filing alleged the individual “conspired to violate the International Emergency Economic Powers Act” and conspired to defraud the United States.