Casualties from the incident suffered symptoms consistent with reaction to a nerve agent (Reuters)

The Syrian Foreign Ministry said in a statement that the fact-finding team had based its report on "the testimonies offered by terrorists." The fact-finding mission of the OPCW concluded that "a large number of people, some of whom died, were exposed to sarin or a sarin-like substance."

Western governments have said President Al Assad backed the attack in the town of Khan Sheikhoun, which killed 87 people. The Syrian government has denied using chemical weapons.