Air strikes carried out by the Assad regime and Russia on a rebel-held suburb of the capital, Damascus, and Aleppo on Thursday have killed at least 30 people, including women and children.

The Britain-based Syrian Observatory for Human Rights said Thursday's attacks targeted the suburb of Hammouriyeh in Damascus. The Observatory, which tracks the Syrian conflict through a network of activists, says there were women and children among the casualties.

The Local Coordination Committees, another activist group, said the air raids hit residential areas, killing 23 and wounding dozens. The discrepancy in the death tolls could not immediately be reconciled but different accounts are common in the chaos of Syrian crisis.

Government warplanes and helicopter gunships often attack opposition-held suburbs of Damascus, which is President Bashar Assad's seat of power.

Warplanes belonging to Russia hit İhsin district in northern Aleppo, killing at least 10 civilians including children. 15 vehicles have been burnt as a result of the strikes and roads have reportedly been destroyed.

Meanwhile, Russia has also attacked a hospital in Western Aleppo, and has attacked Azez, Tel Rafat and other villages in northern Aleppo.