BEIRUT—The Syrian army said an air strike late on Wednesday by the US-led coalition hit poison gas supplies belonging to Islamic State, releasing a toxic substance that killed "hundreds," but the coalition denied carrying out raids in the area.
A statement by the army, flashed on Thursday by Syrian state TV, said the incident in the eastern Deir al-Zor province proved that Islamic State and al Qaeda-linked militants "possess chemical weapons."
The report could not immediately be independently verified.
US Air Force Colonel John Dorrian, a spokesman for the coalition, said it had carried out no air strikes in that area at that time.