The matter shall be referred to the liberty and custody judge for the purposes of extending the detention period by simple request from the administrative authority, under the conditions laid down in Chapter III, before the expiry, as appropriate, of the forty-eight hour period referred to in article L. 742-1 or the extension period ordered pursuant to articles L. 742-4, L. 742-5, L. 742-6 or L. 742-7.
The application is sent by any means to the registry of the competent court in accordance with the provisions of article R. 743-1.