Vanni District was later renamed Mullaitivu District and then Vavuniya District. The district was colonised in the second half of the 18th century by residents from Jaffna Peninsula, primarily from Alaveddy, Udupiddy and Navaly. At the time that Ceylon gained independence, Vavuniya was one of the three districts located in the Northern Province. Mullaitivu District was carved out of the northern part of Vavuniya District together with parts of the then Jaffna District, Mannar District and Trincomalee District in September 1978.