Article D55-1 of the French Code of Criminal Procedure
Except in the case of preparatory investigations, the judicial authority ordering a remand in custody or, failing this, the public prosecutor responsible for enforcing the decision, shall send to the head of the establishment, at the same time as the detention order, the notice provided for by l’article D. 32-1-1 (alinéa 1er). This notice specifies, where applicable, the measures prescribed by the judicial authority and the notice provided for by…