The UK-based Syrian Observatory for Human Rights has said more than 50,000 people have left rebel-held areas of eastern Aleppo, as the government continues its push to retake the city from ISIL militants.

The group said 30,000 went to Kurdish-controlled districts, while the remaining 20,000 were transported to government-held neighborhoods. The group added that 21 civilians, including two children, were killed in government artillery fire on the Jubb al-Qubbeh district.

The Syrian Arab News Agency reported that eight civilians, including two children, were killed in rebel fire in the west of the city.

The UN Security Council is due to hold emergency talks on fighting in Aleppo and Syria's opposition said it was working with France on a draft resolution seeking an immediate ceasefire.