Two women were exposed to mustard gas in an attack in Syria last year, the global chemical weapons watchdog has told the UN.
As they were unable to visit the site of the attack in Aleppo, investigators based their findings on interviews with the women, blood samples, and analysis of information provided by the Syrian government and Russia.
The Organisation for the Prohibition of Chemical Weapons (OPCW) Fact Finding Mission detailed their findings in a report to the UN Security Council.
The report read: ‘The FFM can confirm that the two female casualties reported to have been involved in the incident in Um Hosh, Aleppo of 16 September 2016 were exposed to sulphur mustard.
‘Supported by the results of laboratory analysis, the FFM has determined that this mortar is a munition containing sulphur mustard.’
Syria previously agreed to destroy all its chemical weapons in 2013.
But since then, the OPCW and the UN have found Syrian government forces were responsible for three chlorine gas attacks in 2014 and 2015, and Isis militants used mustard gas.
The fact finding mission is responsible solely for determining if chemical weapons have been used in Syria.
The OPCW and UN could now investigate the attack to determine who is to blame.