Bengal Volunteers planned for the killing of I.G Lowman in Dhaka Medical College and Binoy Krishna Bose, a medical student was entrusted with the work. Binoy killed Lowman from a distance of 15 m and seriously injured Hudson and escaped. On 8 December 1930, Benoy, together with Badal Gupta and Dinesh Gupta, latter belonging to Medinipur, carried out a daring attack in Writer's Building in the heart of the city of Calcutta and killed the notorious Col. N.S Simpson, I.G Prison, who was charged with atrocities committed on political prisoners, esp. on Subhas. After a heroic battle, also called corridor battle with the police force and the army, Benoy and Dinesh were injured and were caught. Badal committed suicide. Benoy died in hospital and Dinesh was sent to the gallows. Subhas Chandra Bose while doing Saraswati Puja in Jail had freed Dinesh for a day from the condemned cell.