Eurojust ensures authorities receive critical information on new undetectable devices used in prisons

20 May 2025|PRESS RELEASE

French authorities took action in 66 prisons across the country against a new type of device that prisoners are using to communicate with the outside world and continue their criminal activities. Following findings by the prosecutor of the Judicial Court of Paris JUNALCO that these devices are being sold worldwide, Eurojust ensured that critical information on the devices was transmitted to the Agency’s National Desks and Liaison Prosecutors. Authorities can now use this information to investigate whether the devices are being used in their own countries.

Investigators uncovered a device that was being sold worldwide through online marketplaces and could bypass security gates undetected. The device is small, has few metal parts and has specific settings that make it easy to hide from security checks. French investigators estimate that around 5 000 devices were being used in French prisons for criminal activities such as drug trafficking, homicide and money laundering.

During operation Prison Break in France in the early hours of 20 May, nearly 500 cells were searched across the country. Authorities were able to target all 5 000 devices active and take down the market website selling the phones. After concluding the actions in France, the prosecutor ensured that crucial information and technical specifications of the devices were shared with authorities across Europe and beyond. The information was transmitted to all the National Desks and Liaison Prosecutors at Eurojust. They can now share it with their national authorities, who can determine whether the devices are being used in their prisons.

If you are a national authority from a country without a Liaison Prosecutor and would like to receive the information transmitted today, please contact the French Desk at Eurojust.

The following authorities carried out the operation in France:

  • Public Prosecutor’s Office J3 (cybercrime Unit); BL2C – PJPP (Cybercrime unit Préfecture de Police); Gendarmerie National