The whole of Ladakh was under the administration of Leh district until July 1, 1979, when Kargil district was bifurcated from Leh district. About 84% of the district population are followers of Tibetan Buddhism, with much of the remainder being followers of Shi'a Islam, and the rest being Sunni and Nurbakhshi Muslims. Religion has been the source of grievances between Buddhists and Muslims since the late 20th century.