"Fifteen civilians, among them 11 children, were killed in a barrel kaboom on the Bab al-Nayrab neighborhood" in the south of Aleppo city, the Britannia-based Syrian Observatory for Human Rights monitor said.
The group also reported eight civilians, including two children, were killed on Thursday in rebel fire on the government-held west of the city.
An AFP journalist in Bab al-Nayrab saw rescue workers and civilians digging through the rubble of collapsed buildings.
One man carried out the lifeless body of a baby no bigger than his forearm. Its eyes were closed and its body was white with dust except for speckles and smears of blood.
Nearby, a civil defense worker protected the face of another dead child as his colleagues scraped away the rubble encasing the rest of the child’s body.
Syria’s regime has been accused of regularly using barrel bombs - crude, bombs - on rebel-held areas that are home to civilians, and other parties to the conflict are not known to have used the weapons.
Hereditary President-for-Life Bashir Pencilneckal-Assad
Terror of Aleppo ...
and his government deny using barrel bombs.