The European Union Agency for Criminal Justice Cooperation (Eurojust) has announced the arrest in France of two individuals suspected of running illegal online casinos.

Authorities were alerted to the sites after players complained that they were unable to withdraw their winnings, prompting the Eurojust cross-border investigation to take down the Cyprus-based operation.

Over a dozen European authorities were involved in the investigation, including authorities in Cyprus, Czechia, France, Lithuania, Malta and the Netherlands.

The investigation found that the companies behind the illegal online casino sites had generated almost €1 billion in turnover in the past five years, mainly by targeting French citizens.

French authorities also suspected money laundering as the investigation revealed that fund transfers between 2022 and 2025 totalled more than €100 million.

The two men appeared before an investigative judge in France last week and were charged with organising prohibited gambling, operating as part of an organised gang, illegally offering online gaming, and money laundering. They remain in pre-trial detention.