BEIRUT (AP) -- An activist group and state media are reporting that Syrian rebels have shelled government-held parts of the northern city of Aleppo, killing at least 12 people.
State-run Syrian TV said Monday's shelling killed 12 people, including children, and wounded 30 in Syria's largest city and former commercial center.
The Britain-based Syrian Observatory for Human Rights said the shelling killed 13 and wounded many others, of which 10 were seriously wounded.
Aleppo has been carved into government- and opposition-held sectors since mid-2012.
Syrian troops and pro-government militias launched an offensive last month in an attempt to besiege rebel-held parts of Aleppo. Intense fighting has been taking place on the outskirts of the city.