Syrian government and allied forces have advanced towards Aleppo, pursuing their week-old offensive to take the rebel-held part of the city after dozens of overnight air strikes.
The Syrian army told the insurgents to leave their positions, offering safe passage and aid supplies.
Syrian forces supported by Iranian-backed militias and Russian air power began their push to take the whole of the divided city after a ceasefire collapsed last month.
An air campaign by the Syrian government and its allies has been reinforced by a ground offensive against the besieged eastern half of Aleppo, where insurgents have been holding out. Hospitals have been badly hit in the assault, medics say.