Syrians describe effects of alleged chemical attack
16 May 2013 Last updated at 16:16 BST
A BBC news team has travelled to a town in northern Syria which eyewitnesses claim has been attacked with a poisonous chemical.
They entered Saraqeb and spoke to people who said they had suffered after two devices were dropped from a helicopter last month.
The claims of an attack, which have not been independently verified, have been strongly denied by the Syrian government.
Ian Pannell and his cameraman Darren Conway report from Saraqeb.