Syria conflict: Video appears to show gas attack aftermath
A Syrian rescue service in rebel-held territory has posted this video on social media apparently showing the aftermath of a toxic gas attack in Saraqeb in Idlib province.
The Syrian Civil Defence group, which describes itself as a neutral band of volunteers, said barrels of what they suspected was chlorine were dropped from a helicopter overnight, affecting 33 people, mostly women and children.
Their video shows several men struggling to breathe and being given oxygen masks.
Both the government and rebel groups in Syria's civil war have been accused of, and denied, using chemical agents.