Russian jets intensified their raids on rebel-held towns and cities in Syria's northern Idlib province on Sunday night, a day after rebels shot down a Russian warplane and killed its pilot.
Civil defence sources said air raids struck the towns of Kafr Nubl and Maasran, as well as the cities of Saraqeb, Maarat al Numan and Idlib, and that several deaths and dozens of injuries were reported as rescuers dug through the rubble.
A hospital was hit in Maarat al Numan, witnesses and residents said, and at least five people were feared killed in another attack that damaged a residential building in Kafr Nubl.