The Gendarmerie Nationale and the Police Nationale are the national police forces of Chad.

Historical secret police organizations

• Direction de la Documentation et de la Sécurité (DDS) (Directorate of Documentation and Security)

Secret police organizations

• Agence nationale de sécurité (ANS) (National Security Agency)

Sources

1. World Police Encyclopedia, ed. by Dilip K. Das & Michael Palmiotto published by Taylor & Francis. 2004,
2. World Encyclopedia of Police Forces and Correctional Systems, second edition, 2006 by Gale.
3. Sullivan, Larry E. Encyclopedia of Law Enforcement. Thousand Oaks: Sage Publications, 2005.