"The FFM [Fact-Finding Mission] determined that chlorine was released from cylinders by mechanical impact in the Al Talil neighbourhood of Saraqib", the report...
The organization said it made its conclusion based on the cylinders recovered, witness testimony, environmental samples that demonstrated the unusual local presence of chlorine and the subsequent treatment of patients, who showed symptoms consistent with exposure to chlorine and other toxic chemicals.
"I strongly condemn the use of toxic chemicals as weapons by anyone, for any goal and under any circumstances, said the Director General of the OPCW Ahmet üzümcü, commenting on the conclusions of the experts of the organization".
The OPCW is to report soon on whether chemical weapons were used on a larger-scale attack in Douma, eastern Ghouta, in May.
About 11 people were treated after the attack on February 4. for mild and moderate symptoms of toxic chemical exposure, including breathing difficulties, vomiting and unconsciousness, the report said. Western observers said the use of helicopters in the attack suggested Syrian government involvement since the opposition did not have access to helicopters.
Medics have claimed the Douma attack on 7 April led to 40 deaths.
The Syrian government denies the allegations. "Such acts contradict the unequivocal prohibition against chemical weapons enshrined in the Chemical Weapons Convention". That attack led to the U.S., France and Britain blaming the Syrian government and launching joint punitive airstrikes targeting suspected Syrian chemical weapons facilities on April 14.
The regime had agreed to destroy its chemical weapons in 2014, following global outrage over a sarin gas attack in the Damascus suburb of Ghouta in August 2013 that killed hundreds in the worst attack of its kind for a quarter of a century. Rebels were found to have used sulphur mustard once on a small scale.