In 1894 he graduated in law at the University of Kiev, in the same year appointed as civil servant, responsible for art and printing. In 1899 he was appointed as governor of the Kovno Governorate in Lithuania; in 1904 he was transferred from Kaunas to Vilnius, in February 1907 in Samara, where he was appointed as vice-governor and applied the newly introduced land reforms by Stolypin. When Stolypin became prime minister, he invited Beletsky to become assistant director of the Department of Police. Beletsky became its director until 1915. From October 1914 Beletsky exercised 24-hour surveillance of Rasputin and his apartment. Two sets of detectives were attached to his person; one was to act undercover. From 1 January 1915 modified reports from Okhrana spies – the "staircase notes" – had to provide evidence about Rasputin's lifestyle. They were given to the Tsar in an attempt to convince him to break with Rasputin. On 25 March 1915 Rasputin left for Moscow by train, accompanied by his guards. On the next evening he is said, while inebriated, to have opened his trousers and waved his "reproductive organ" in front of a group of female gypsy singers in the Yar restaurant. Dzhunkovsky and Beletsky verified later that Rasputin never visited the Yar restaurant. Dzhunkovsky was fired in August and succeeded by Beletsky. No entries exist after Beletsky lost his position as the Director of the Police. Also for Bernard Pares, it was taken that the police were the enemies of Rasputin, and that the many stories which reached the public were simply their fabrications. In September 1915 he became assistant minister of the Interior until February 1916. Alexei Khvostov, Iliodor and Beletsky concocted a plan to kill Rasputin. By ukaz Beletsky was to be replaced to Irkutsk, but the appointment was cancelled after the story was revealed in a newspaper. Early 1917 he was arrested by the Russian Provisional Government during the February Revolution and locked up in the Peter and Paul Fortress. After bail the arrested were released, but Beletsky decided not to go abroad. He was rearrested during the Red Terror. In 1918 he was transported to Moscow and executed at Khodynka or in Petrovsky Park.