In May 1956, the CAB1 began as the 7th arrondissement of the Police in Derb Baladia, Casablanca, and was headed by Houssine Seghir, a plumber in Mers-Sultan and ex-member of a Casablanca-based resistance movement.[1] At the time the DGSN was directed by Mohammed Laghzioui, a prominent member of the Istiqlal party. After Laghzioui left the DGSN, the CAB1 was formed under Mohammed Oufkir with consultancy from French and American intelligence technicians.[2]