Article 706-88-1 of the French Code of Criminal Procedure
If it emerges from the initial elements of the investigation or from police custody itself that there is a serious risk of imminent terrorist action in France or abroad, or that the requirements of international cooperation make this imperative, the juge des libertés may, exceptionally and in accordance with the procedures set out in the second paragraph of Article 706-88, decide that the current police custody of a person, based…