Important Abbreviations:

CodeMeaning
GAVGarde à Vue, meaning police custody.
PSIGPeloton de Surveillance et d’Intervention de la Gendarmerie, meaning the Surveillance and Intervention Platoon.
BACBrigade Anti-Criminalité, referring to anti-crime units.
OPJOfficier de Police Judiciaire, or Judicial Police Officer.
P.VProcès-Verbal, meaning an official report or record.