Article D70 of the French Code of Criminal Procedure
Finally sentenced persons are received in the prisons mentioned in article R. 112-15 of the Penitentiary Code or in the quarters of the penitentiary centres mentioned in article R. 112-16 of the same code and corresponding to these establishments. In exceptional circumstances, prisons may hold convicted prisoners under the conditions determined by the provisions of article L. 211-3 of the same code.