The mayor of Port-au-Prince is Ralph Youri Chevry, who headed the city at the time of the 2010 earthquake.  The city's separate districts (primarily the districts of Delmas, Carrefour, and Pétion-Ville) are all administered by their own municipal councils. The seat of the state, the Presidential Palace, is located in the Champ de Mars, square plaza of the city. The PNdH (''Police Nationale d’Haïti'') is the authority governing the enforcement of city laws.