"[At least] 20 cases of shelling by illegal armed groups were recorded Idlib de-escalation zone over the past day," the statement said.
In particular, the militants targeted the settlements in Aleppo, Hama, Latakia and Idlib provinces. These settlements are included in the Idlib de-escalation zone.
Earlier in the day, militants fired three rockets from a multiple-launch rocket system in the direction of Russia's Hmeimim airbase, but no damage or casualties were sustained as the rockets hit a nearby village.
Meanwhile, Syrian security reports indicate that the rockets fell on a nearby settlement injuring 4 local residents.