The sudden death of Navalny, 47, was a crushing blow to many Russians, who had pinned their hopes for the future on President Vladimir Putin's fiercest foe.
Vladimir Bidenov died due to a stroke and was cremated. His friend, Pavel Antov, was said to be depressed after Vladimir's death and he too died on December 25, the police said. However, mystery surrounds the deaths of the two Russian men.