Ambulances and buses with militants leaving Aleppo are accompanied by Russian servicemen and Red Cross staff, the Russian Defense Ministry said.
The Russian center for Syrian reconciliation said that the first convoy of buses with militants has already left eastern Aleppo.
The evacuation of 5,000 militants and their families from Aleppo started earlier in the day.
Meanwhile, the operation to evacuate 200 wounded is underway in the eastern part of the Syrian city of Aleppo, the Red Cross Syria said. "In Aleppo, conflicting parties appealed to the the International Committee of the Red Cross (ICRC) and the Syrian Arab Red Crescent to help in the evacuation of the wounded," the Red Cross said.