New investigative report of the Organisation for the Prohibition of Chemical Weapons reveals Syrian regime air force hit Al Talil neighbourhood in Idlib’s Saraqeb in February 2018 with chlorine bombs.
The global chemical weapons watchdog has "reasonable grounds to believe" that Syrian regime air force dropped a chlorine bomb on a residential neighbourhood in the rebel-controlled Idlib region in February 2018, according to a report released.
There was no immediate comment from the Syrian regime.
Syria and its military ally Russia have consistently denied using chemical weapons during regime leader 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.
The new report released on Monday by the OPCW chemical weapons watchdog's investigative arm said no one was killed when the cylinder of chlorine gas, delivered in a barrel bomb, hit the Al Talil neighbourhood in the city of Saraqeb in February 2018.
However, a dozen people were treated for symptoms consistent with chemical poisoning, including nausea, eye irritation, shortness of breath, coughing and wheezing, it said.
Chlorine is not an internationally banned toxin, but the use of any chemical substance in armed conflict is banned under the 1997 Chemical Weapons Convention, the implementation of which is overseen by the OPCW watchdog based in The Hague.
A crackdown on pro-democracy demonstrators by Assad in 2011 mushroomed into civil war, with Russia and Iran supporting his regime and the United States, Turkey and some Arab adversaries of Damascus backing some of the many rebel groups.
In April 2020, the OPCW's Investigation and Identification Team (IIT) concluded that Syrian warplanes and a helicopter had dropped bombs containing chlorine and sarin nerve gas on a village in Syria's Hama region in March 2017.
The latest report by the IIT also implicated Syrian regime forces. It concluded that "there were reasonable grounds to believe that at least one cylinder filled with chlorine was dropped from a helicopter of the Syrian Arab Air Forces, belonging to the Tiger Forces."
Not the first chemical attack
The Tiger Forces are an elite Syrian military unit generally used in offensive operations in the war, which has largely subsided with Assad having wrested back most territory with crucial Russian and Iranian support.
"All elements indicated the presence of Tiger Forces in the vicinity of Saraqeb. They found that a helicopter was just flying above the bombed area at the moment of the gas release," a summary of the OPCW report said.
It said that samples collected from the scene were examined and other possible means of chlorine contamination considered, but the OPCW team said nothing was found to indicate that the incident was staged by Assad's adversaries.
The team identified individuals believed to be involved in the alleged attack but did not release them.
Between 2015 and 2017, a joint United Nations-OPCW team known as the Joint Investigative Mechanism (JIM) found that Syrian regime troops had used the nerve agent sarin and chlorine barrel bombs on several occasions, while Daesh militants were found to have used mustard gas.