A/HRC/39/46 77. In the report, the Working Group will also focus on this relationship. For example, how truth commissions, commissions of inquiry or teams of international independent experts can provide useful elements in criminal investigations. 78. An effective investigation is also a vehicle for the accomplishment of all the pillars of full reparation, including not only justice, but also the guarantees of non-recurrence. 5. The search for the disappeared 79. In the thematic report, the Working Group will not deal with the search for the disappeared, i.e. the mechanisms and policies created at the institutional level to search for those who are missing, as this is an issue with its own specific standards and experiences, which would deserve a specific and separate study. However, there is an obvious interaction between the criminal investigation of enforced disappearances and the search for the disappeared, and therefore the Working Group will inevitably explore some elements of this relationship. In this regard, it should be also noted that the Committee on Enforced Disappearances has begun the process of developing guidelines on the search for the disappeared. 11