In the 1930s, soviet secret services became interested in Serhii Tymoshenko, a former Minister of Railways of the Ukrainian People’s Republic, architect, politician, and public figure. He was considered a potential organizer of the anti-soviet underground. The situation escalated after Tymoshenko’s secret visit to Kharkiv in 1932, when he arrived under an assumed name for a secret meeting. The chekists later extracted testimony about this event during interrogations, although the authenticity of some details is questionable.