An estimated 655,000 to 700,000 Rohingya people reportedly fled to Bangladesh between 25 August 2017 and December 2017, to avoid ethnic and religious persecution by Myanmar's security forces in their "clearance operations" against insurgents,[113][114][115] joining an additional 300,000 Rohingya refugees in Bangladesh who had arrived after fleeing earlier waves of communal violence.[116] The United Nations Office for the Coordination of Humanitarian Affairs (OCHA) estimated on 31 July 2018 that 128,000 Rohingyas were internally displaced inside of Rakhine State.[29][30]