The United Nations says the evacuation of rebels and their families from eastern Aleppo in Syria is underway.

A fragile ceasefire holds for now as ambulances carrying the injured have begun leaving the besieged city. It's thought around 50-thousand civilians are still trapped.

Fighters and their families had been due to leave on Wednesday, but the ceasefire collapsed.

The evacuation has already faced security incidents - A rescue spokesman claims the first ambulances were shot at by snipers and at least one person's been killed.

Kim Buckley has this report: