Trapped civilians and rebels are waiting to leave east Aleppo in Syria after a new deal was reportedly reached for evacuations to resume.

Government and rebel sources say the agreement will allow people to leave several besieged enclaves in Syria.

But hours after the announcement, aid agencies were still waiting for the evacuations to start.

At least 6,000 people left east Aleppo under a fragile truce on Thursday, but the operation was halted a day later.

The area has seen rapid government advances in recent weeks.