in annual revenue as royalties based on the 1974 Petroleum Development Act. The state government of Sabah ceded Labuan to the Malaysian federal government, and Labuan became a federal territory on 16 April 1984. In 2000, the state capital Kota Kinabalu was granted city status, making it the 6th city in Malaysia and the first city in the state. Prior to a territorial dispute between Indonesia and Malaysia since 1969 over two islands of Ligitan and Sipadan in the Celebes Sea, the International Court of Justice (ICJ) made a final decision to award both islands to Malaysia in 2002 based on their "effective occupation". In February 2013, Sabah's Lahad Datu District was penetrated by followers of Jamalul Kiram III, the self-proclaimed Sultan of the Sulu Sultanate. In response, Malaysian military forces were deployed to the region, which resulted in 68 deaths (58 Sultanate militants, nine Malaysian security personnel, and six civilians). Following the elimination of insurgents, an Eastern Sabah Security Command was established. Politics Government Sabah (together with its neighbour Sarawak) has a greater level of autonomy in administration, immigration, and judiciary which differentiates it from the Malaysian Peninsula states. The Yang di-Pertua Negeri is the head of state although its functions are largely ceremonial. Next in the hierarchy are the state legislative assembly and the state cabinet. The chief minister is the head of government as well the leader of the state cabinet. The legislature is based on the Westminster system and therefore the chief minister is appointed based on his or her ability to command the majority of the state assembly. While local authorities being fully appointed by the state government owing to the suspension of local elections by the federal government. Legislation regarding state elections is within the powers of the federal government and not the state. The assembly meets at the state capital, Kota Kinabalu. Members of the state assembly are elected from 73 constituencies which are delineated by the Election Commission of Malaysia and do not necessarily have the same voter population sizes. A general election for representatives in the state assembly must be held every five years, when the seats are subject of universal suffrage for all citizens above 21 years of age. Sabah is also represented in the federal parliament by 25 members elected from the same number of constituencies. Prior to the formation of Malaysia in 1963, the then North Borneo interim