Washington took “final” measures to cut off a Cambodia-based finance company from the U.S. financial system on Tuesday, seeking to eliminate a “critical node” in North Korea-linked cryptocurrency laundering.

The U.S. Treasury’s Financial Crimes Enforcement Network (FinCEN) issued a “final rule” on Tuesday targeting Phnom Penh-based Huione Group, a financial services network accused of funneling proceeds from cyber heists carried out by the DPRK and transnational criminal organizations.

U.S. financial institutions are now barred from maintaining accounts for or processing transactions involving Huione Group, effectively blocking the conglomerate’s direct or indirect access to the American financial system, FinCEN said.

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