On 13 September 1948, the Indian Army was sent into Hyderabad under Operation Polo on the grounds that the law and order situation there threatened the peace of South India. The troops met little resistance by the Razakars and between 13 and 18 September took complete control of the state. The operation led to massive communal violence with estimates of deaths ranging from the official one of 27,000–40,000 to scholarly ones of 200,000 or more. The Nizam was retained as the head of state in the same manner as the other princes who acceded to India. He thereupon disavowed the complaints that had been made to the UN and, despite vehement protests from Pakistan and strong criticism from other countries, the Security Council did not deal further with the question, and Hyderabad was absorbed into India.