MOSCOW (Sputnik) — According to the information provided, a large, but unidentified number of terrorists have been killed and wounded.
Syria has been in a state of civil war since 2011, with the forces loyal to President Bashar Assad fighting several opposition factions and extremists.
The government-held city of Deir Ez-Zor has been under siege from Daesh, which is outlawed in Russia, since July 2014.
On February 22, Russia and the United States reached an agreement on a ceasefire in Syria, which took effect at midnight on February 27. The ceasefire does not apply to terrorist groups operating in Syria.