Explain the following statement with reason.
The Indian Government started police action against the Nizam.
The princely state of Hyderabad, also known as the Hyderabad Deccan was a princely state located in the South-Central region of the Indian union. The state was ruled by the Nizam who was initially a Mughal governor before becoming independent. After the independence of the country in 1947, the British government gave choice to the princely states to either join India or Pakistan or remain independent. The Nizam of Hyderabad, Osman Ali Khan Asaf Jah VII announced that he intended to remain independent and was not ready to join either India or Pakistan. Consequently, the Indian government signed a Standstill Agreement whereby the status quo would be maintained without any army action for one year, and India would handle Hyderabad’s foreign affairs. Meanwhile, Telangana Peasant Riots, attacks by quasi-military body Razakars and other Hindu-Muslim communal violence was raging in Hyderabad. The Indian forces posted in the borders were attacked by them. India retaliated by invading Hyderabad from all the borders from 13 September 1948. The military operation was named Operation Polo. The Nizam surrendered on 17 September, and Hyderabad was annexed to the Indian union.