Syria denied a report by the global chemical weapons watchdog which said there were reasonable grounds to believe that the Syrian air force dropped a chlorine bomb on a residential area in the rebel-controlled Idlib region three years ago.
"The report includes false and fabricated conclusions," the foreign ministry said in a statement. "The ministry condemns the report in the strongest terms."
Syria and its military ally Russia have consistently denied using chemical weapons during President Bashar al-Assad's decade-old conflict with rebel forces, saying any such attacks were staged by opponents to make Damascus look like the culprit.