Banco Delta Asia and FinCEN Section 311

As of November 2026: As of November 2026 the latest primary record reviewed is FinCEN's August 2020 withdrawal and repeal, which says FinCEN will reassess whether the bank is presently of primary money laundering concern. No later FinCEN action was searched for in full. The allegations are FinCEN claims in regulatory notices, partly based on classified sources, not court findings. The date Macau's administrative committee took over (29 September 2005) comes from the bank's counsel's letter, and no Macau government or AMCM release was reachable, so the end of the takeover is not stated. The 14 June 2007 transfer is from a VOA report quoting Macau's finance secretary, not a Macau or Treasury release. The route of the money and the size of the unfreezing (reported as more than $20 million against about $25 million frozen) were not confirmed in an official source.

Also known as: Banco Delta Asia North Korea · BDA Macau Section 311 · Banco Delta Asia frozen funds.

What happened?

Banco Delta Asia was a small commercial bank in Macau, a Special Administrative Region of China. FinCEN’s 2005 notice said it had eight branches, about 340 staff and equity of about $35 million at the end of 2003. It was the banking arm of the Delta Asia Group, which also ran investment banking and insurance.

On 15 September 2005 the US Treasury announced that it had designated the bank under Section 311 of the USA PATRIOT Act. FinCEN’s finding, published in the Federal Register on 20 September, said the bank was of primary money laundering concern. A proposed rule published the same day would bar US banks from keeping a correspondent account for it and would require them to guard against its indirect use through other banks’ accounts.

The key dates came in four steps:

• September 2005. The finding and proposed rule. Comments were due by 20 October 2005.
• After the proposal. Macau’s authorities took over the bank and froze some accounts.
• March 2007. FinCEN published the final rule on 19 March, effective 18 April 2007.
• 2007. About $25 million of frozen North Korea-linked funds was unblocked and moved.

Which techniques did it use?

This section describes what FinCEN alleged. It is a regulatory notice, not a court finding. The notice also said the bank likely did some legitimate business.

• A bank tailored to one client group. FinCEN said the bank had served North Korean government agencies and front companies for over 20 years, that such clients made up a significant amount of its business, and that it handled the bulk of North Korea’s precious metal sales. It said sources showed a fee was paid for access to the banking system with little oversight.
• Cash. The notice said the bank helped North Korean agents make multi-million dollar cash deposits and withdrawals, and that senior officials worked with North Korean officials to accept large cash deposits, including counterfeit US currency. See bulk cash smuggling.
• Front companies. FinCEN said it kept an unbroken relationship with a North Korean front company even after its head was charged over an attempt to deposit counterfeit currency and expelled from Macau.
• Detail added in 2007. The final rule said one North Korea-linked entity deposited the equivalent of over $50 million in 2002, more than half of the bank’s bulk cash deposits that year. It cited repeated round-figure transfers with no apparent licit purpose, hidden originators and two related accounts handling over 30 percent of bulk cash turnover. See sanctions evasion.

How was it found?

FinCEN gave no single trigger. It said the finding rested on a review of information, talks with other agencies and the Section 311 factors. The 2007 rule said its conclusions came partly from classified sources, but mainly from an independent review by a large international accounting firm of the bank’s North Korea-linked activity and a separate US Government review of the bank’s records. It also said Macau’s own regulator had written to the bank in 2004 warning that North Korea lacked transparency in supervision, and advising it to strengthen its checks or scale back that business.

What was the outcome?

• Takeover. Per the 2007 rule, the Macau Monetary Authority appointed a three-person administrative committee to replace senior management. The bank’s counsel said it took control on 29 September 2005. The rule noted its term had been extended twice, to March 2007.
• Run on deposits. FinCEN reported the bank’s statement that about one-third of total deposits were withdrawn. The bank reported about $390 million in customer deposits before the proposal and about $205 million in assets in July 2006.
• Freeze. FinCEN said Macau froze accounts believed tied to illicit North Korean activity. Treasury later described roughly $25 million as frozen.
• Final rule. FinCEN said the bank’s controls were grossly inadequate, that its management showed a pattern of disregard, and that it feared a return to old practice once the committee ended. It added that the bank no longer kept a US correspondent account but might still reach the US system through nested accounts at other foreign banks.
• Release. On 19 March 2007 Treasury said the US and North Korea had an understanding on the money, and that the final rule stayed in place. On 10 April it said Macau was prepared to unblock the accounts. On 14 June 2007 Macau’s finance secretary said most of the money had left the bank, with more than $20 million sent on a North Korean client’s instruction.
• Repeal. FinCEN rejected petitions to rescind the rule in September 2007. On 10 August 2020 it withdrew the finding and repealed the rule to settle the bank’s 2013 lawsuit, saying it would reassess the bank. It added that in September 2019 it had found the bank’s anti-money laundering efforts still inadequate.

What were the warning signs?

• Cash that did not fit the customer. Large, unexplained currency deposits with no checks on where the money came from.
• Weak customer files. FinCEN listed missing identity and business information and poor risk rating of customers.
• Concealed originators. Transfers arranged through third parties, and round-figure movements between accounts.
• Management overriding staff. Where employees raised doubts, senior managers vouched for customers without documents.
• A customer base built around one high-risk sector. FinCEN said the bank sought out high-risk accounts that made up whole business lines.

What changed afterwards?

The case showed how little a bank needs to be large for the effects to spread. FinCEN’s 2007 notice said the bank was not a major participant in the international payment system, yet it also said many of the bank’s foreign correspondent relationships were terminated after the 2005 finding. In April 2006 Treasury’s Under Secretary cited press reports that about two dozen financial institutions had cut back or ended dealings with North Korea. VOA reported in June 2007 that no bank had been willing to handle the transfer of the unfrozen money at first for fear of harming ties with the US banking system. This is early evidence of de-risking, where banks drop whole customer groups to avoid exposure.

Section 311 was used on other banks later. Compare ABLV Bank, where the finding preceded a deposit run, and Huione Group. For North Korea’s later theft of digital assets, see Lazarus Group. See also know your customer.

First published November 7, 2026 · Last updated November 7, 2026 · Legal statuses current as of November 2026