Article 728-27 of the French Code of Criminal Procedure
Where, before or after the transfer of the sentenced person, the competent authority of the administering State requests the representative of the Public Prosecutor’s Office to agree that the sentenced person may be prosecuted, sentenced or deprived of liberty in the administering State for an offence which he or she allegedly committed before being transferred, other than that for which the request for recognition and enforcement was made, the request…