"The formations of terrorist organizations of Fatah al Sham Front and ISIL continue to hinder the establishment of the ceasefire regime in Syria," said the statement published by the Hmeimim Center, Ria Novosti reported.
Syria has been engaged in war against terrorist groups since 2011, with government forces loyal to President Bashar Assad fighting a number of militant and terror groups, such as ISIS and Fatah al Sham Front.
On September 9, Russian Foreign Minister Sergey Lavrov and US Secretary of State John Kerry presented a new plan to regulate the conflict in Syria, which included a new ceasefire that came into force on September 12.
On Wednesday, Lavrov stressed that the September 16 attacks by US-led coalition forces on Syrian army positions at a military airport near Deir Ezzur were a flagrant violation of the ceasefire agreement.
According to the Russian Foreign Ministry, the violated ceasefire in Syria has been strictly adhered to only by the Syrian government forces, FNA reported.
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