The US has imposed sanctions on six people and three companies it says have ties to Iran’s elite military force, the Revolutionary Guard Corps (IRGC).
Treasury Secretary Steven Mnuchin said the penalties targeted those who had funnelled millions of dollars to the group, funding its “malign activity”.
Iran’s central bank helped the IRGC to access US dollars via “a large-scale currency exchange network,” he said.
The Treasury Department said all six individuals were Iranian.
US individuals and entities will be barred from doing business with them following the move, which was carried out in conjunction with the United Arab Emirates (UAE).