Russian opposition politician Aleksei Navalny met with residents in Orenburg in the Urals on September 30 as part of his campaign for the March 2018 presidential election.
The event was sanctioned by the city authorities.
According to several estimates there were around 800 to 1,500 people at the event.
Navalny flew to Orenburg in the morning, hours after Moscow police released him from detention late on September 29 where he was held for about 10 hours, in a move that prevented him from speaking at a rally in Nizhny Novgorod.
He has been ordered to appear at an administrative hearing on October 2 on charges of repeatedly organizing illegal demonstrations.
Navalny has vowed to keep holding rallies that have drawn thousands of people across Russia.
We are not going to stop what we do, whatever the obstacles," Navalny told journalists waiting for him outside the Moscow police station.
Navanly plans to attend another demonstration in the northern city of Archangelsk on October 1.
Since announcing last year that he would run in the March 2018 presidential election, Navalny, 41, a vocal critic of President Vladimir Putin, has opened more than 60 campaign offices in different regions of Russia.