In his opening submissions, and at any time during the investigation by supplementary submissions, the public prosecutor may request the investigating magistrate to perform any acts that he deems useful for ascertaining the truth and to take any necessary security measures. He may also ask to be present at the performance of the acts he requires.
To this end, he may have the proceedings communicated to him, on condition that he returns them within twenty-four hours.
If he requests that the person under investigation be remanded in custody or kept in custody, his requests must be in writing and reasoned by reference only to the provisions of article 144.
If the investigating judge does not follow the Public Prosecutor’s requests, he must, without prejudice to the application of the provisions of Article 137-4, make a reasoned order within five days of these submissions.
Failing an order from the investigating judge, the public prosecutor may, within ten days, refer the matter directly to the investigating chamber. The same applies if the juge des libertés et de la détention (liberty and custody judge), referred to by the investigating judge, does not issue an order within ten days of his referral.