A total of three civilians were killed and nine others injured in regime's attacks on residential areas in Syria's northern de-escalation zones on Tuesday, local sources said.
Rocket and mortar attacks by regime forces and allied Iran-backed foreign terrorist groups targeted Idlib province's Hobait village, Hama province's Qalaat Al-Madiq town and the villages of Kafrnabuda, Al-Huwaiz, Al-Huwaija, Al-Tuwayna and Al-Kirkat, the sources said.
One civilian lost his life in Kafrnabuda and six others were injured in Hobait and Al-Huwaiz villages, according to the sources, who spoke on condition of anonymity due to restrictions on speaking to the media.
A health center was targeted by a regime warplane in Hobait village which left it out of service, according to the same sources.
A school has also been targeted by an airstrike in Idlib province's Al-Kassabiya village.
According to the Syrian opposition aircraft observatory, airstrikes on Kafrnabuda and Al-Kassabiya villages have been carried by Russian jets which took off from the Khmeimim airbase in Syria's western Latakia province.
Hours later, two more civilians were killed and three others injured in regime's warplanes shelling in towns of Abidin and Uraynibah.
Last September, Turkey and Russia agreed to turn Idlib into a de-escalation zone in which acts of aggression would be strictly prohibited.
Syria has only just begun to emerge from a devastating conflict that began in 2011, when the Assad regime cracked down on demonstrators with unexpected severity.