Article R40-35 of the French Code of Criminal Procedure
The authorisations provided for in Article 230-16 are issued under the following conditions: 1° For national police officers carrying out judicial police duties, either by the heads of the national police territorial services, or by the heads of the active services at the police headquarters or, where applicable, the police prefect, or by the heads of the national police central services or, where applicable, the director general to whom they…