Article 695-45 of the French Code of Criminal Procedure
The investigating chamber may also, where this is possible and the person sought consents, agree to the temporary transfer of the latter in accordance with the forms provided for in the articles 695-28 and 695-29, the first to third paragraphs of article 695-30, and the last paragraph of l’article 695-31, it being for the judicial authority of the issuing Member State to send the person back to attend hearings concerning…