Article 696-45 of the French Code of Criminal Procedure
Where, in a criminal case investigated abroad, the foreign government deems it necessary to communicate exhibits or documents in the hands of the French authorities, the request shall be transmitted in the forms provided for in articles 696-8 and 696-9. The request will be followed up, unless there are special considerations to the contrary, and subject to the obligation to return the exhibits and documents as soon as possible. .