"They fled towards government-held areas in west Aleppo and districts newly controlled by regime forces in the north and centre of the city," said Rami Abdel Rahman, head of the Syrian Observatory for Human Rights.
A resident in the city's southeast told AFP that he saw large crowds of people fleeing during the night towards regime-held districts in west Aleppo.
According to the Observatory, fighting raged on several fronts between rebels and regime forces in southeast Aleppo, while regime raids and artillery fire continued to pound rebel-held areas.
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