Russian and Syrian air strikes have hit the Syrian city of Aleppo, just days before world powers are to meet for talks aimed at reestablishing a cease-fire in the war-torn country.
Rebel-held eastern Aleppo has witnessed some of the heaviest bombardments of the five-year war in recent weeks after the collapse of a U.S.-Russia brokered cease-fire last month.
Syrian government forces, backed by Russian air strikes, have been trying to wrest control of Aleppo.
More than 20 air strikes hit the rebel-controlled east on October 13, killing seven civilians, according to the Syrian Observatory for Human Rights, which said four more people were killed in shelling.
The air strikes came just days before world powers meet in Switzerland and Britain to discuss an end to the violence.
The observatory said on October 12 that at least 358 civilians had been killed in eastern Aleppo since September 19.
The United Nations has said over 100 children have been killed in the campaign, which has also included a limited ground offensive.