Military Collegium of the Supreme Court of the USSR
During the Great Purge, Polivanov was arrested on 16 August 1937 in Bishkek and was charged with spying for Japan. On October 1, in the Butyrka prison, he requested in writing that the NKVD halt severe interrogation methods against him, arguing that they made him issue false statements that confused the investigation against him. On 25 January 1938, he was tried in a closed session of the Military Collegium of the Supreme Court of the USSR and pleaded not guilty. He was sentenced to death and executed by NKVD near Moscow. He was rehabilitated in 1963. In late October 2018, a memorial containing his name besides over 6,000 others was erected at Kommunarka.