[2][5] He was briefly released from jail but when he continued to engage in anti-British activities, he was sent back and his ancestral family home in Benaras was confiscated.

[citation needed] Following the end of the Non-cooperation movement in 1922,[2] Sanyal, Ram Prasad Bismil and some other revolutionaries who wanted an independent India and were prepared to use force to achieve their goal, founded the Hindustan Republican Association in October 1924.

[6] He was the author of the HRA manifesto, titled The Revolutionary, that was distributed in large cities of North India on 1 January 1925.

[7] Sanyal was jailed for his involvement in the Kakori conspiracy but was among those conspirators released from Naini Central Prison in August 1937.

[9] Sanyal participated in anti-British programs, which resulted in a second prison term and government seizure of his Benares property.