Washington state resident Geoffrey K. Auyeung has been sentenced to five years in federal prison for orchestrating a sprawling money-laundering operation that funneled nearly $100 million in fraud proceeds through banks, cryptocurrency exchanges, and offshore channels.
Auyeung, from Newcastle, admitted in a plea agreement to one count of conspiracy to commit money laundering. Prosecutors said he played a central role in moving and disguising funds that victims believed were being invested in legitimate oil and gas ventures, but which were in fact part of a sophisticated fraud scheme.
U.S. District Judge John C. Coughenour handed down the sentence in federal court in Seattle, noting that the punishment reflected “the scope and magnitude of this fraud.” The judge emphasized that the scale of the laundering activity, the number of victims, and the persistent conduct even after indictment warranted a significant prison term.
According to court filings, nearly $100 million flowed through bank and crypto accounts controlled or opened by Auyeung. Between June 2022 and July 2024, these accounts received approximately $97.1 million in third‑party deposits, which the government says all represented fraud proceeds.
First Assistant U.S. Attorney Neil Floyd said Auyeung was not the architect of the underlying investment scam but was essential to its success. “Mr. Auyeung facilitated a fraud, developed by others,” Floyd stated. By providing banking and crypto infrastructure, Auyeung enabled fraudsters to access and conceal investor funds that otherwise might have been blocked or detected.
Victims believed they were sending their money to legitimate escrow accounts as part of an oil‑storage investment opportunity. Prosecutors said fraudsters promised investors they would profit by renting tank storage to third parties at facilities in Rotterdam in the Netherlands and in Houston, Texas. In reality, once the funds landed in accounts that Auyeung controlled, they were quickly moved, layered, and obscured.
Court records show that from around August 2022 through August 2024, Auyeung created at least nine corporate entities designed to receive investor funds. These shell companies carried names referencing oil, gas, logistics, escrow, and energy services, giving them an air of legitimacy when victims and financial institutions examined transaction details.
To support the scheme, Auyeung opened at least 81 bank accounts at 24 different financial institutions. He also established 19 accounts across eight cryptocurrency exchanges. Authorities said this broad network of accounts was instrumental in fragmenting the money trail and making it harder for banks and law enforcement to track where the funds ultimately ended up.
Investigators reported that Auyeung used exchanges such as Gemini, BitStamp, and Coinbase to convert incoming fiat deposits into digital assets. The crypto purchases included Bitcoin, Tether (USDT), USD Coin (USDC), and Ethereum. Much of this cryptocurrency was then transferred on to Binance accounts that, according to court documents, were controlled by individuals in Nigeria and Russia.
Prosecutors argued that this layering of funds through multiple platforms and jurisdictions is a classic money‑laundering technique. By rapidly converting dollars into various digital assets and moving them across borders to accounts under different names, Auyeung helped coconspirators distance themselves from the original fraud and complicate efforts to recover money for victims.
Sentencing materials described how Auyeung used false transaction descriptions and fabricated supporting documents to mislead banks and compliance officers. He labeled transfers in ways that suggested ordinary commercial activity and submitted paperwork that did not reflect the true purpose of the transactions, all with the goal of avoiding heightened scrutiny.
Authorities also said Auyeung cycled victim funds among numerous accounts that had no genuine business relationship with one another. This “round‑tripping” and layering, combined with the use of both traditional banks and crypto exchanges, made the fraud proceeds appear to come from a patchwork of unrelated sources rather than a single, coordinated scheme.
Beyond his own accounts, Auyeung routed some illicit funds through accounts in his wife’s name, according to prosecutors. This step, they argued, was another attempt to distance himself from the money, conceal ownership, and further disguise the origin of the proceeds.
The financial rewards for his role were substantial. Prosecutors said Auyeung personally collected at least $4,078,348 in commissions for moving and laundering funds. They also alleged that as he came to understand more clearly that he was handling fraud proceeds, he demanded higher commissions for his services, reflecting an increasing comfort with the criminal nature of his activities.
Auyeung was arrested in August 2024 and entered his guilty plea in February of the following year. Even after being indicted and taken into custody, prosecutors said he continued communicating with his coconspirators, behavior that they argued showed a disregard for the law and a willingness to persist despite the risk of additional penalties.
The human cost of the scheme was evident at sentencing. One victim traveled from the United Kingdom to address the court and speak directly to Auyeung. In a brief but emotional statement, the victim told him, “You caused a lot of pain,” underscoring how the crime was not just a matter of numbers on a balance sheet, but a devastating blow to real people’s finances and trust.
The full restitution amount has not yet been finalized. Judge Coughenour referred the calculation of victim losses to a magistrate judge for further proceedings. Prosecutors have asked the court to order $24,707,031 in restitution to be paid to identified victims, though total losses may be higher and some funds may never be recovered.
Auyeung faces significant forfeitures in addition to prison and restitution. The court ordered him to forfeit approximately $2.3 million seized from various bank accounts and from his residence. He will also lose a high‑end Audi SQ8 vehicle, which authorities say was tied to the proceeds of the scheme.
As part of his plea, Auyeung agreed not to contest civil forfeiture actions targeting about $7.1 million in cryptocurrency that investigators seized from digital wallets linked to him. He also consented to surrender around $300,000 from bank accounts to be applied toward restitution obligations.
Judge Coughenour praised federal prosecutors and investigators for their efforts to trace and recover as much of the stolen money as possible. He described their work in following the complex financial trails as “superb,” acknowledging the difficulty of unwinding cross‑border transactions involving multiple intermediaries and digital asset platforms.
The investigation was led by Homeland Security Investigations and IRS Criminal Investigation, agencies that have increasingly focused on financial crimes involving cryptocurrencies. Assistant U.S. Attorneys Jehiel I. Baer and Yunah Chung prosecuted the case.
The Auyeung prosecution highlights how traditional fraud schemes are increasingly intertwined with digital assets. While the core pitch to victims-invest in oil storage and earn returns from rental income-resembled long‑standing investment scams, the laundering phase leaned heavily on crypto exchanges and cross‑border transfers to obscure what was happening to the money.
For law enforcement, cases like this illustrate both the challenges and the evolving toolkit for tracking funds in a digital era. Blockchain technology can provide transparent records of transactions, but when funds are quickly shuffled through multiple wallets, converted between coins, and moved to exchanges in different jurisdictions, tracing and freezing assets still demands substantial expertise and coordination.
For investors, the case serves as a warning about high‑yield opportunities linked to complex or specialized markets such as oil storage, energy logistics, or international commodities. Prosecutors noted that victims genuinely believed they were wiring funds to legitimate escrow accounts and real energy‑sector firms, a belief reinforced by the professional‑sounding company names Auyeung and his coconspirators used.
Several features of the scheme mirror red flags that consumer advocates often highlight: unsolicited or lightly vetted investment pitches, promises of outsized returns, pressure to move money quickly, and instructions to send funds to new or unfamiliar accounts. The use of escrow structures that investors cannot independently verify is another recurring risk factor.
The heavy use of cryptocurrency in the laundering process also underscores the importance of robust compliance measures at exchanges and financial institutions. In this case, the sheer number of accounts-81 banking relationships and 19 crypto accounts across eight platforms-shows how criminals attempt to exploit gaps in know‑your‑customer checks and transaction monitoring.
Regulators and investigators increasingly urge both banks and exchanges to scrutinize patterns such as frequent large third‑party deposits, rapid conversion of incoming fiat to crypto, transfers to high‑risk jurisdictions, and activity that has no clear business rationale. When such patterns appear in accounts linked to newly formed entities with vague or generic business descriptions, the risk is even higher.
The sentencing additionally reflects how courts may evaluate the culpability of intermediaries in fraud schemes. Although Auyeung did not design the underlying oil‑investment scam, his expertise in creating entities and moving funds made the fraud scalable and harder to detect. His five‑year term underscores that facilitators who “just move the money” can face substantial prison time, particularly when the amounts and victim losses are high.
As the restitution process unfolds, victims will be watching to see how much can be clawed back. Even with millions seized from bank accounts, crypto wallets, and property, the government’s proposed restitution figure suggests many investors may still recover only a fraction of what they lost. That reality echoes a broader pattern in financial fraud cases: once money has been layered through multiple accounts and jurisdictions, full recovery is rare.
Finally, the case illustrates how personal enrichment can escalate within criminal networks. According to prosecutors, Auyeung not only earned more than $4 million in commissions, but also increased his demands as he came to fully understand the fraudulent nature of the scheme. That progression-from initial involvement to deeper, more self‑interested participation-is a factor courts often weigh when assessing intent and appropriate punishment.
In combination, the prison term, forfeitures, and pending restitution orders send a clear signal from federal authorities: individuals who leverage banking and crypto infrastructure to disguise fraud proceeds, even if they are not the original scammers, should expect to face serious criminal and financial consequences.