The U.S. Treasury Department added new details to a list of sanctioned people and businesses on Wednesday meant to signal to banks around the world that they should be on the lookout for clients who have been blacklisted from the U.S. financial system for connections to North Korea.

The details, published online, were released as part of the department's requirements under a U.S. law passed late last year banning foreign subsidiaries of American banks from doing business with anyone who has already been sanctioned by the Treasury Department because of their illicit ties to the DPRK.