In this citizen journalism image provided by the Media Office Of Douma City, which has been authenticated based on its contents and other AP reporting, a Syrian man mourns over a dead body after an alleged poisonous gas attack fired by regime forces, according to activists, in Douma town, Damascus, Syria, Wednesday, Aug. 21, 2013. (AP Photo/Media Office Of Douma City)

Syrian forces bomb area of alleged chemical attack

Syrian opposition figures and activists have reported widely varying death tolls from Wednesday’s attack, from 136 to as high as 1,300.