Four civilians were killed and scores others injured Thursday in two regime airstrikes in Syria’s northwestern Idlib province, a pro-opposition civil defense source said.

Axar.az reports citing Anadolu news agency.

The airstrikes targeted residential parts of Idlib’s town of Kafr Nabl, the source told Anadolu Agency anonymously due to security concerns.

Casualties included two children, the source said, adding that a number of people still remain trapped under the rubble of collapsed buildings.

Kafr Nabl was also targeted last Saturday by regime warplanes, leaving at least six civilians dead.

Since the Syria conflicted erupted six years ago, more than 250,000 people have been killed in the fighting, according to UN figures, while nearly half of the country’s population has reportedly been displaced.