More than 4,000 fighters left Aleppo in recent hours as the evacuation of rebel-held parts of the city nears its conclusion, the International Committee of the Red Cross said Thursday.

"Overnight between Wednesday and Thursday, in one of the last stages of the evacuation, more than 4,000 fighters were evacuated in private cars, vans, and pick-ups from eastern Aleppo," said Ingy Sedky, the ICRC's spokeswoman in Syria.