Faction of the Syrian opposition attacked three government-occupied neighbourhoods in western Aleppo, leading to the death of at least 38 people, including 14 children, according to the Syrian Observatory for Human Rights (SOHR).
"More than 150 people were wounded. This is one of the highest death tolls caused by opposition shelling on regime areas in the city," said Rami Abdelrahman, head of the SOHR.
The observatory stated that the opposition forces hit the three neighbourhoods with mortars and rockets.
On the other hand, regime war planes dropped barrel bombs on the western neighbourhoods of Aleppo killing a number of civilians residing in the targeted areas, according to the observatory.
Clashes between the regime and armed opposition groups in Aleppo started in 2012, leading to mass destruction and bombardment in the province.
Armed opposition forces took control of parts of the city after confrontations and clashes with regime forces and pro-regime militias.
Aleppo is currently divided into two parts as regime and opposition-held. Between the two parts of the city there is a passage called the “Bustan al Kaser,” which the regime sometimes closes, preventing civilians from passing to regime-held parts of the city.
The Syrian regime has waged a campaign of intense air strikes against Aleppo since Dec. 18, 2013.
More than 220,000 Syrians have been killed so far in the country’s four-year conflict according to UN estimates. More than 6.7 million Syrians, 70 percent of the country's population, are displaced internally while at least 5 millions have fled the country to neighbouring Turkey, Iraq, Lebanon and Jordan.