Syrian rebels have posted a number of videos purporting to show the impact of a second chemical weapon attack in Damascus.
Residents reported that the attack took place during morning prayers yesterday, and approximately 400 people were showing "signs of exposure to chemical toxic gases."
ITV News cannot independently verify the social media content.
More top news
A plane powered purely by solar power has taken off from Egypt for the final leg of the first ever fuel-free flight around the world.
Animal rights group PETA seizes 'teachable moment', warning Pokémon Go users the game is akin to animal cruelty.
A Labour MP has accused aides to Jeremy Corbyn and John McDonnell of a 'violation of privacy, security and confidentiality'.