TECH
Europol targets underground banking network linked to drug trafficking
Some of the world's leading underground bankers were targeted in an international law enforcement operation against a sophisticated financial network suspected of financing drug trafficking and laundering money derived from criminal activities worldwide.
At the heart of the investigation lies a structure known as the "Dubai Bank." Despite the name, it is not a conventional banking institution but rather a clandestine network that, according to Europol, provided financial services to criminal organizations.
The network is suspected of having provided the means to finance large drug shipments and subsequently move the proceeds generated from their sale.
This type of underground banking enables the transfer of value between countries via operators who receive and deliver funds in different jurisdictions, bypassing the need for every transaction to go through conventional banking channels. Balances between intermediaries can be settled later through other financial or commercial flows.
For criminal organizations, these operators function as financial service providers: they facilitate payments to suppliers, the movement of money across borders, and the concealment of the origin or destination of proceeds.
The case originated with the seizure of 1.8 tons of cocaine off the Spanish coast. The subsequent financial investigation allowed authorities to look beyond the drug transport chain and identify the operators suspected of moving the money linked to these criminal activities.
According to Europol, the investigation ultimately exposed a network capable of moving illicit funds on an international scale. The European agency describes some of the suspects as being among the major underground bankers identified by authorities—a classification that should be understood as Europol’s own assessment.
The operation also demonstrates a strategy that goes beyond merely arresting those directly responsible for the crimes. Authorities aim to target the services, assets, and infrastructure that allow criminal organizations to continue operating. This same logic was applied in Operation Endgame, where authorities targeted cybercrime infrastructure and identified or froze over €41 million in digital assets.
The investigation, led by the Spanish National Police (*Policía Nacional*) and supported by Europol, resulted in the arrest of 21 suspects for crimes including participation in a criminal organization, drug trafficking, and money laundering.
An operation carried out in Spain on July 22, 2026, resulted in the arrest of 15 suspects. Spanish authorities also issued 19 international arrest warrants for suspects located outside the country. Six of these warrants have already been executed, resulting in four arrests in the United Arab Emirates, one in Egypt, and one in the Netherlands.
Among those detained is a key figure from a major underground banking network known as the "Dubai Bank." Identified by Europol as a high-value target, the suspect is believed to have played a pivotal role in providing financial services to large-scale drug trafficking operations worldwide.
Authorities identified, seized, or froze assets worth approximately €20 million. These included 48 properties valued at over €14 million, luxury vehicles worth more than €1.6 million, and 121 bank accounts with a combined balance of €2.3 million.
Cocaine investigation leads to the money...Operation DRAKKAR stemmed from an investigation into a large cocaine shipment intercepted by the Spanish National Police in February 2021. Officers boarded a vessel in Spanish coastal waters and discovered 1,835 kilograms of cocaine. All nine crew members were arrested. After the crew and the drugs were removed, the vessel was towed to the port of Gijón, Spain. The ship subsequently sank after taking on water due to a leak allegedly caused by the captain.
Investigators later discovered the reason: another 1,650 kilograms of cocaine had been hidden on board. It is suspected that members of the criminal network later entered the sunken ship and retrieved the hidden cargo. It was determined that both cocaine shipments had been loaded in South America in January 2021. The plan was to transfer the drugs on the high seas to speedboats, which would then transport the cocaine to shore in Spain.
The investigation into those responsible for the shipment gradually led investigators to higher levels of the criminal chain. Links were established to other suspected drug trafficking operations worldwide, while financial tracing exposed individuals suspected of financing the shipments and laundering the proceeds of the trafficking.
This eventually led investigators to a sophisticated international financial infrastructure used to provide underground banking services to organized crime.
The “Dubai Bank”... At the heart of the investigation was an underground money transfer network known as the "Dubai Bank." The network is suspected of making large sums of money available to criminal organizations in different countries on very short notice, providing the financial infrastructure needed to fund large drug shipments and move the resulting illicit profits.
Instead of physically transferring cash across borders for each transaction, underground banking networks can move value between jurisdictions through networks of brokers. Payments can be settled via internal accounting and clearing mechanisms, including commercial transactions, companies and their bank accounts, centralized cash management, or transfers of other assets.
The network operated on a commission basis, with fees varying depending on the transaction and other factors.
Investigators also identified the use of tokens to authenticate cash transactions. A unique identifier—often the serial number of a banknote—could be passed along the chain of transfer. Presenting the corresponding identifier upon receipt of the cash allowed the parties involved to verify that the money was being handed over to the intended recipient.
The financial investigation also identified assets suspected of having been acquired with illicit funds, including a luxury property in Ibiza.
Europol support...Europol supported the investigation by facilitating the international exchange of information and providing operational and financial analysis that helped identify key financial intermediaries within the network. Since October 2024, the investigation has also been supported by an Operational Task Force established at Europol.
Europol provided expertise in underground banking systems and asset tracing and recovery. Specialists were deployed to Spain for the day of the operation, where a money laundering expert supported investigators on the ground using a mobile office.
Given the network's global reach, international cooperation was crucial to the investigation. Authorities from the Netherlands, Sweden, and the United States—including the U.S. Drug Enforcement Administration (DEA)—contributed to the investigation.
mundophone