Russian authorities have detained politician Yevgeny Roizman known for his criticism of the Kremlin and, more recently, of the military campaign in Ukraine, Russia's TASS news agency reported on Wednesday.
Roizman, a former mayor of the city of Yekaterinburg, is being investigated for "discrediting the Russian army", TASS reported, citing Yekaterinburg security services.
Roizman was one of a handful of Kremlin critics who won mayoral posts following a series of big opposition demonstrations as President Vladimir Putin campaigned for office in 2012.