Any investigating or trial court, where a technical question arises, may, either at the request of the public prosecutor or of its own motion, or at the request of the parties, order an expert report. The public prosecutor or the party requesting an expert report may specify in their request the questions they would like the expert to ask.
Where the investigating judge considers that he should not grant a request for an expert report, he must make a reasoned order within one month of receiving the request at the latest. The provisions of the penultimate and last paragraphs of Article 81 shall apply.
The experts shall carry out their mission under the supervision of the investigating judge or the magistrate to be designated by the court ordering the expert examination.