Supreme Court of the USSR
Chattopadhyaya was arrested on 15 July 1937 during the Great Purge of Stalin. His name appeared on a death list among 184 other persons, which was signed on 31 August 1937 by Stalin, Molotov, Voroshilov, Zhdanov and Kaganovich. The death sentence was pronounced by Military Collegium of the Supreme Court of the USSR on 2 September 1937 and Chatto was executed the same day.