Badal Gupta (Bengali: বাদল গুপ্ত Badol Gupto), real name Sudhir Gupta (1912 – 8 December 1930), was an Indian revolutionary against British rule in India, who is noted for launching an attack on the Secretariat Building - the Writers' Building in the Dalhousie square in Calcutta, along with Benoy Basu and Dinesh Gupta.[citation needed] The revolutionaries decided not only to murder him, but also to strike a terror in the British official circles by launching an attack on the Secretariat Building - the Writers' Building in the Dalhousie square in Kolkata.[citation needed] On 8 December 1930, Badal along with Dinesh Gupta and Benoy, dressed in European costume, entered the Writers' Building and shot dead Simpson.Some other officers like Twynam, Prentice, and Nelson suffered injuries during the shooting.Badal took Potassium cyanide, while Benoy and Dinesh shot themselves with their own revolvers.