 Later, the Bengal Volunteers became a more active revolutionary association and prepared a plan of "Operation Freedom" against the police repression in Bengal, especially against the inhuman conduct with the political prisoners in different jails.In August 1930, the revolutionary group planned to kill Lowman, the Inspector General of Police who was due to present in the Medical School Hospital to see an ailing senior police official undergoing treatment.On 29 August 1930, Benoy casually clad in traditional Bengali attire, breached the security and fired at close range.