Air strikes in the north-west of Syria on November 13 resulted in death of at least 53 civilians, according to the reports of the Syrian monitoring center for the observance of human rights.
The center noted that among the dead were five children and three policemen.
Reportedly, the air strikes were inflicted by either Syrian troops or Russian military aircraft, which supports the regime of President Bashar Assad.
Civil defense teams are working to help the wounded on the scene.
Earlier, an air raid occurred in the area of Kusur in the city of Deir ez Zor in the east of Syria which led to the death of more than ten people. State Syrian television reported that planes of a US-led international coalition fighting the "Islamic state" inflicted an air strike that killed 14 civilians and injured 32 other people.