New evidence has surfaced reportedly showing the use of chemical weapons in Syria.

The BBC says it has been shown evidence which appears to show a chemical attack in the northern Syrian town of Saraqeb last month. It quotes eyewitnesses and victims as saying that government helicopters dropped at least two devices containing poisonous gas on the town.

The Syrian government says it did not and will not use chemical weapons.

The BBC claims that shortly after midday on April 29th the town of Saraqeb came under attack from government military positions about 5 miles away.

However the BBC says they cannot verify the images but that footage they gathered from the scene was taken by people in the town and £appears to have been filmed on the same day from different positions".

It is claimed that shortly after that, casualties started to arrive at Saraqeb hospital. It adds people were admitted, apparently with similar symptoms and appear to be vomiting, with breathing problems.

The videos show patients with bloodshot eyes and some appear to have constricted pupils.