The Autonomous Region of Bougainville, previously known as North Solomons, is an autonomous region in Papua New Guinea. The largest island is Bougainville Island (also the largest of the Solomon Islands group), and the province also includes the island of Buka and assorted outlying islands including the Carterets. The capital is temporarily Buka, though it is expected that Arawa will once again become the provincial capital. The population of the province is 175,160 (2000 census).