An image grab taken from a video uploaded on YouTube by the Local Committee of Arbeen on August 21, 2013 allegedly shows Syrians covering a mass grave containing bodies of victims that Syrian rebels claim were killed in a toxic gas attack by pro-government forces in eastern Ghouta and Zamalka, on the outskirts of Damascus. The allegation of chemical weapons being used in the heavily-populated areas came on the second day of a mission to Syria by UN inspectors, but the claim, which could not be independently verified, was vehemently denied by the Syrian authorities, who said it was intended to hinder the mission of UN chemical weapons inspectors. AFP PHOTO / YOUTUBE / LOCAL COMMITTEE OF ARBEEN== RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT 'AFP PHOTO / YOUTUBE / LOCAL COMMITTEE OF ARBEEN' - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS - AFP IS USING PICTURES FROM ALTERNATIVE SOURCES AS IT WAS NOT AUTHORISED TO COVER THIS EVENT, THEREFORE IT IS NOT RESPONSIBLE FOR ANY DIGITAL ALTERATIONS TO THE PICTURE'S EDITORIAL CONTENT, DATE AND LOCATION WHICH CANNOT BE INDEPENDENTLY VERIFIED == (Photo credit should read DSK/AFP/Getty Images)
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