This is the Fifth Joint Investigation Teams (JITs) Evaluation Report, published by the Secretariat of the Network of National Experts on Joint Investigation Teams, since 2014.

Based on 67 evaluations completed by JIT practitioners between December 2022 and December 2024, the report provides an overview of lessons learned and best practices. The evaluations highlight the critical importance of the setting-up phase in ensuring the success of JITs. Early involvement of Eurojust proved pivotal in facilitating coordination among participating countries, clarifying objectives, and resolving legal and procedural differences.

It also focuses on Eurojust’s experience with JITs set up in cybercrime cases and recent developments in the use of JITs. The findings emphasise the importance of adapting JIT practices to address increasingly complex and evolving criminal activities, which often involve multiple jurisdictions and sophisticated technologies.

The report also highlights the ongoing support provided by the Western Balkans Criminal Justice Project to JIT activities, as well as the development of a dedicated collaboration platform for joint investigation teams.