At least 14 civilians were killed when missiles hit a children’s hospital, a school and other facilities in the rebel-held Syrian town of Azaz near the Turkish border on Monday, a medic and two residents reported.

They said that at least five missiles hit the hospital in the center of town and a nearby school, where refugees fleeing a major Syrian army offensive were sheltering, Reuters reports.

Another resident said that a refugee shelter south of the town was also hit by bombs dropped by jets which are believed to be Russian.