Article 230-12 of the French Code of Criminal Procedure
In order to gather evidence and identify the perpetrators, by establishing links between individuals, events or offences, of crimes and misdemeanours of a serial nature, the national police and gendarmerie services and units responsible for a judicial police mission may implement, under the control of the judicial authorities, automated processing of personal data collected in the course of: 1° Preliminary or flagrante delicto enquiries or investigations carried out under a…