According to the United Nations, as of July 2019[update], over 742,000 Rohingya people had fled or had been driven out of Rakhine State who sought refuge in Bangladesh.[1][2] The Balukhali camp is believed to be the largest in the world, and held approximately one-tenth of Bangladesh's one million Rohingyan refugees,[3][4] spread over 34 camps on 8,000 acres (3,200 ha).[5] Over half its population comprises children, state the UN regional representative.[6] It had experienced a previous large fire in 2017, caused by exploding gas cylinders.