On completion of the operations or as soon as it appears that such operations are technically impossible or on expiry of the prescribed time limit or on receipt of the stop order from the public prosecutor, the investigating court, the judicial police officer, with the authorisation of the public prosecutor or examining magistrate, or the court hearing the case, the results obtained and the documents received are returned by the head of the technical body either to the author of the requisition, or to the instructing magistrate if the requisition was sent directly. Subject to the obligations arising from national defence secrecy, the results are accompanied by technical information that is useful for understanding and using them, as well as a certificate endorsed by the head of the technical body certifying the sincerity of the results transmitted.
The elements thus obtained are the subject of a report of receipt and are placed in the case file.