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.
After Pulin Behari Das's arrest as the main figure behind the Dhaka branch of Anushilan Samiti, Pratul and Trailokyanath Chakravarty took over the reins of the organization and reformed it. He was put on trial for his involvement in the Barisal conspiracy case in 1914 and served a 10-year prison sentence, but was released early. Two years later, he joined the Congress party.