Following the arrest of Pulin Behari Das ( the main organizer of the Dhaka branch of Anushilan Samiti), Pratul and Trailokyanath Chakravarty took charge of the Anushilan Samiti and reorganized the association. He was tried in the Barisal conspiracy case and was sentenced for 10 years imprisonment in 1914, however he was released earlier. In 1922, he joined Congress.
Following the apprehension of Pulin Behari Das (the primary organizer of the Dhaka branch of Anushilan Samiti), Pratul and Trailokyanath Chakravarty assumed control of the Anushilan Samiti and restructured the organization. He was put on trial in the Barisal conspiracy case and received a 10-year imprisonment sentence in 1914, but he was released beforehand. In 1922, he joined the Congress.