The Syrian government denies that its forces have ever used chemical weapons
A Syrian air force helicopter dropped a chlorine bomb on an opposition-held town on 4 February 2018, the chemical weapons watchdog has concluded.
An investigative team from the Organisation for the Prohibition of Chemical Weapons (OPCW) said there were "reasonable grounds to believe" at least one cylinder hit Saraqeb.
It released a toxic gas cloud that affected 12 individuals, they found.
There was no immediate response from the Syrian government or military.
However, they have previously denied allegations that government forces used chlorine or the nerve agent Sarin during Syria's decade-long civil war.
The conflict has left at least 380,000 people dead and caused half the population to flee their homes, including almost six million refugees abroad.

Syrian air force behind 2018 chlorine attack on Saraqeb, OPCW finds
The chemical weapons watchdog believes a helicopter dropped a cylinder on rebel-held Saraqeb.
