BEIRUT (AP) — Mortar fire killed at least six people in a suburb of the Syrian capital Thursday, activists and state media said, amid reports that clashes in a coastal province killed a top foreign fighter who was a former Guantanamo Bay detainee.

Syria’s state news agency said four mortar rounds slammed into Harasta, a district northwest of Damascus, killing six children and wounding five more. Another five people were wounded when a mortar struck the upscale central neighborhood of Maliki, the agency said.