MOSCOW (AP) — Boris Nadezhdin, who criticized Moscow’s military action in Ukraine and tried to challenge President Vladimir Putin in the 2024 election, was convicted Friday of displaying “extremist symbols” — an action that will keep him out of this year’s parliamentary race.

The charges against Nadezhdin, 63, were based on a 2023 online interview in which he briefly showed a picture of the late opposition leader Alexei Navalny, who at that time was serving a 19-year prison sentence on charges of extremism that were widely seen as politically motivated. Navalny later died in an Arctic penal colony on Feb. 16, 2024.