The Naujawan Bharat Sabha (Youth Society of India) was founded by Bhagat Singh, Chhabil Das, Yashpal, and others in March 1926 in Lahore. Ambika Chakravarti was a prominent Bengali revolutionary associated with the Chittagong Armoury Raid (1930) led by Surya Sen and was part of the Anushilan Samiti/Indian Republican Army network in Bengal, not an early member of the Naujawan Bharat Sabha which was primarily active in Punjab.