Union of the Russian People
The world notorious fame came to General Dumbadze in 1909 when he provided the concealment of justice to Alexander Dubrovin, a leader of the Union of the Russian People (URP). On in Terijoki, (now Zelenogorsk) the deputy of the I State Duma, Mikhail Herzenstein was assassinated. Investigators got evidences that the murder was organized by Yushkevich-Kraskovsky, an assistant of Dubrovin. Yushkevich-Kraskovsky worked with the killers directly at the office of URP in Petersburg, where he gave them photos of a targeted victim, money etc.