 A guerrilla insurgency was initiated by the Indian-organised and supported "Mukti Bahini" ("freedom fighters").Millions of Bengali Hindus and Muslims took refuge in eastern India leading to Indian Prime Minister Indira Gandhi announcing support for the Bangladesh liberation war and providing direct military assistance to the Bengalis.In March 1971 regional commander Major General Ziaur Rahman declared the independence of East Pakistan as the new nation of Bangladesh on behalf of Mujib.