Brigades de Recherche et d'Intervention

They specialise in very serious cases of robbery or hostage kidnappings for the BRI of Paris (BRI-PP). For hostage kidnapping, the BRI-PP is supported by specialised units of the Préfecture de police and is nicknamed BRI-BAC ("Brigade Anti-Commando" Counter-commando Brigade) or "BRI en formation BAC". They typically attempt to catch offenders in the act after monitoring their activities.