The head of Russia's Wagner group, Yevgeny Prigozhin, said on Saturday he had ordered his fighters, who had been advancing on Moscow, to turn around and return to their bases in order to avoid bloodshed.
Prigozhin said his fighters had advanced to within 200 km of Moscow in the last 24 hours.
Earlier, the office of Belarusian President Alexander Lukashenko said that he had brokered a deal with Prigozhin who had agreed to de-escalate the situation.
The announcement, carried on the official Telegram channel of the Belarusian presidency, said Prigozhin had agreed to halt the further movement of Wagner fighters across Russia.
Russian President Vladimir Putin had called the armed rebellion by the Wagner chief a betrayal and vowed to punish its leaders.
Putin made the statement as Prigozhin, who brought his forces out of Ukraine, seized a key military facility in southern Russia and advanced toward Moscow.
