77-year-old Nikolay Bortsov, who served as a State Duma deputy since 2003, and 57-year-old Dzhasharbek Uzdenov died on the same say, the report said. Meanwhile, Dzhasharbek Uzdenov was a member of Russia's house committee on Ecology, natural resources, and environmental protection.   Notably, the artist had often criticised Mr Putin in his songs and his music was used as an anthem during anti-war protests in Russia