In June 2004, the Oxnard Police Department and the Ventura County Sheriff imposed a gang injunction over a 6.6-square-mile (17 km2) area of the central district of the city, in order to restrict gang activity. The injunction was upheld in the Ventura County Superior Court and made a permanent law in 2005. A similar injunction was imposed in September 2006 over a 4.26-square-mile (11.0 km2) area of the south side of the city.