Article R743-6 of the French Code governing the entry and residence of foreign nationals and the right of asylum

At the hearing, the administrative authority that ordered the placement in detention or its representative, is heard at its request or that of the liberties and detention judge.
The foreign national, unless he or she does not appear, although duly summoned, and, if applicable, his or her lawyer, are heard. The judge appoints an interpreter if the foreign national does not sufficiently speak French.
The public prosecutor may make his opinion known.

Original in French

Article R743-6

A l’audience, l’autorité administrative qui a ordonné le placement en rétention ou son représentant, est entendue sur sa demande ou sur celle du juge des libertés et de la détention.
L’étranger, sauf s’il ne se présente pas, bien que dûment convoqué, et, s’il y a lieu, son avocat, sont entendus. Le juge nomme un interprète si l’étranger ne parle pas suffisamment la langue française.
Le ministère public peut faire connaître son avis.