At least 34 people were killed after Syrian rebels fired hundreds of rockets into Aleppo's western neighborhoods, AFP reported Tuesday.
The Syrian Observatory for Human Rights said rebel factions fired more than 300 rockets into the city's west, which is controlled by President Bashar al-Assad. Twelve children were among the dead, in the Monday attack Observatory Director Rami Abdel Rahman said was "one of the highest tolls in opposition attacks in Aleppo."
"The number of deaths is likely to rise, as there are roughly 190 people wounded, including dozens in critical condition with serious wounds," Rahman told AFP. "With dead and wounded combined, it adds up to the most violent day for government-controlled parts of Aleppo city in the whole war."
UN peace envoy Staffan de Mistura arrived in Damascus on Monday for peace talks aimed at ending the conflict now going on its fifth year. Last year's UN-proposed ceasefire in Aleppo was rejected by rebels.