The office did not specify the date when Umirov was interrogated. A spokesperson for Umirov has not yet responded to a request for comment. The authorities have not accused him of any wrongdoing. Ukraine's National Anti-Corruption Bureau has summoned Umirov to testify as part of an investigation into Timur Mendiych, a suspect in a $100 million bribery scheme involving the state nuclear energy company. According to Reuters, two local Ukrainian media outlets reported that Rustem Umirov, a key figure in peace negotiations with Moscow and Washington, was questioned as a witness by anti-corruption investigators in the largest corruption scandal in wartime Ukraine.
