In cases where, under the provisions of this Code, it is provided that requests for acts or measures useful to the investigation, requests for release, applications for annulment, appeals, appeals or oppositions may be made by prisoners by means of declarations to the head of the prison, these declarations may also be made to any official placed under his authority and designated by him for the purpose of receiving and transmitting them.
These declarations are recorded, dated and signed by the designated official. They are also signed by the detainee; if the latter is unable to sign, this is noted by the official.
These documents are sent without delay, in original or copy and by any means, to the judicial authority for which they are intended.
The provisions of this article shall also apply to notifications which the head of the establishment is required, by virtue of the provisions of this code, to make to prisoners.