Around 34,000 people have been evacuated from eastern Aleppo in a week-long rescue operation, the International Committee of the Red Cross (ICRC) said.
Over 4,000 rebel fighters were evacuated between Wednesday and Thursday to rebel-held western rural Aleppo "in one of the last stages of the evacuation," a spokeswoman said.
"The evacuation will continue for the entire day and night and most probably tomorrow (Friday). Thousands are still expected to be evacuated," she added.
Tens of thousands of civilians desperate to leave Aleppo were left stranded for 48 hours over the weekend after a ceasefire deal broke down.
Dubbed the People's Convoy, aid workers intend to take medical supplies to a new children's hospital in Syria.
Watch all of ITV News correspondent Dan Rivers' reports on the end of the battle for Eastern Aleppo and the evacuation from the city.