After being involved in early repression in Constantine, Algeria as prefect, Maurice Papon was named head of the Parisian police on 14 March 1958. Tensions increased after 25 August 1958, when an FLN guerilla offensive in Paris killed three policemen on boulevard de l'Hôpital in the 13th arrondissement and another in front of the cartoucherie de Vincennes, leading to arrests and jailing of Algerians suspected of supporting the FLN. In 1960 Papon created the Auxiliary Police Force (FPA – Force de police auxiliaire), which was made up of 600 Algerians by Autumn 1960 and operated in areas densely populated by Algerians in Paris and its suburbs.