People search for human remains at a trench believed to be used as a mass grave on the outskirts of Damascus
A member of Syria's White Helmets civil defence collects human remains at a mass grave that was uncovered, in Damascus
A man stands next to a trench believed to be used as a mass grave on the outskirts of Damascus
Members of Syria's White Helmets civil defence transport body-bags containing human remains that were recovered from a mass grave, in Damascus
A fighter of the ruling Syrian body inspects the site of a mass grave in Najha, Syria