"Since last week, Turkey's heavy artillery has been shelling Syrian troops and patriotic opposition in border areas. According to reconnaissance, the Turkish artillery has fired more than 100 volleys at border residential areas in the Aleppo province," Maj. Gen. Igor Konashenkov said.
On Saturday, Turkish forces began shelling the positions of Kurdish People's Protection Units (YPG) in Syria's Aleppo region.
On Saturday, Turkish Prime Minister Ahmet Davutoglu claimed Turkish forces shelled Kurds' positions in northern Syria as a retaliatory measure within rules of engagement. Syria's Foreign Ministry branded the shelling as direct support of the terrorists on Sunday.
Kurdish fighters, alongside the Syrian Armed Forces, have been fighting against terrorists in the north of the country.