Syrian government forces have retaken a key area in southern Aleppo, activists and state media say, leaving rebels with only a small pocket in the city, the BBC reports.
The Syrian Observatory for Human Rights reported that the Sheikh Saeed district had fallen to the army overnight.
On Monday morning, there were clashes in neighbouring Fardous and Karam al-Daadaa, the monitoring group added.
The gains mean that the rebels have now lost 90% of the territory they held in eastern Aleppo in less than a month.
Russia, whose air strikes have helped the government break four years of deadlock, says more than 700 rebels have surrendered and 13,300 civilians have left the rebel enclave in the past 24 hours.
Tens of thousands of civilians are believed to be still living there under siege, with virtually no access to food, water or medical care.