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A deal to evacuate the last rebel-held part of eastern Aleppo is back on, opposition fighters say, a day after a previous agreement fell through, the BBC reports.

Rebel fighters and civilians in the Syrian city had been due to leave early on Wednesday, but the truce collapsed.

Rebel groups said late on Wednesday that evacuations would take place in the early hours of Thursday.

But there has been no confirmation so far from the Syrian government or its major ally Russia.