Article 706-176 of the French Code of Criminal Procedure
The territorial jurisdiction of a judicial court may be extended to the jurisdiction of one or more courts of appeal for the investigation, prosecution, hearing and judgment of the offences provided for in articles 221-6,221-6-1,222-19,222-19-1,222-20 and 222-20-1 of the Penal Code in cases that involve multiple victims and are or would appear to be highly complex. This jurisdiction extends to related offences. A decree shall determine the list and jurisdiction…