Article 704 of the French Code of Criminal Procedure
In cases which are or would appear to be of great complexity, due in particular to the large number of perpetrators, accomplices or victims or the geographical jurisdiction over which they extend, the territorial jurisdiction of a judicial court may be extended to the jurisdiction of several courts of appeal for the investigation, prosecution, investigation and, if the offences are misdemeanours, the trial of the following offences: 1° Offences provided…