Syrian news agency SANA said "terrorist groups" fired shells containing toxic gas at two neighbourhoods in the government-held city in the country's north.
Police said earlier that 15 civilians suffering from breathing difficulties were taken to hospitals after an attack on the al-Khalidiye neighbourhood, SANA reported.
Aleppo has been relativity calm since December 2016, when Syrian government forces regained full control of the city from rebels following a Russian-backed campaign.
Police said earlier that 15 civilians suffering from breathing difficulties were taken to hospitals after an attack on the al-Khalidiye neighbourhood, SANA reported.
Aleppo has been relativity calm since December 2016, when Syrian government forces regained full control of the city from rebels following a Russian-backed campaign.