Residents of rebel-held parts of Aleppo say a Russian-backed air campaign against their city is targeting schools, marketplaces and hospitals.
Footage obtained by Reuters, and filmed on Wednesday (September 28), showed burning buildings and a scene of devastation in several neighbourhoods of the city.
The Syrian Civil Defence said they lacked enough resources to be able to deal with so many fires and emergencies.
Syrian government forces and rebels fought battles in the centre of Aleppo and north of the city on Friday (September 30), a week into the Russian-backed offensive by the Syrian army to take the entire area, a war monitor and sources on both sides said.
There were conflicting accounts on the outcome of Friday's fighting.
The Syrian Observatory for Human Rights and a Syrian military source said government forces had captured territory north of the city and buildings in the city centre.
Rebel sources however denied any additional advances north of the city by government forces that seized the Handarat camp area north of Aleppo on Thursday.
The Syrian military and its allies launched an offensive one week ago aimed at capturing rebel-held districts of eastern Aleppo that are home to more than 250,000 people.