Syrian state television is reporting that government soldiers found chemical agents in rebel tunnels in the Damascus suburbs of Jobar this morning. The government run station quoted a "news source" as saying:
In some cases, soldiers are suffocating while entering Jobar. Ambulances came to rescue the people who were suffocating in Jobar.
Activists say more than a thousand people were killed in a chemical attack in Jobar on Wednesday morning.
Britain has directly accused the Assad regime of gassing hundreds of Syrian civilians amid warnings only 48 hours remain to find proof.Read the full story ›
A Syrian filmmaker has said hospital workers in Damascus are struggling to identify babies who survived the alleged chemical attack because their parents may already be dead and buried.
Speaking on Skype, Humam Husari told ITV News a large number of bodies were buried before they had been identified.
World leaders are facing diplomatic deadlock over Syria, caught between video evidence that strongly suggests a chemical attack, and the absence of concrete evidence.
Footage obtained by ITV News shows the aftermath of the alleged attack: Men, women and children lying dead where they fell.
Whatever killed them will have dispersed quickly, meaning that their bodies are likely to be the only evidence about its nature.
ITV News correspondent Paul Davies reports:
New videos show the eyewitness accounts of four men who witnessed an alleged chemical attack on Zamalka, a suburb of Damascus.Read the full story ›
"We do believe that this is a chemical attack by the Assad regime on a large scale," Foreign Secretary William Hague said today.
"It is now 48 hours since the reports started to come in of what seems to have been a terrible atrocity near Damascus including the use of chemical weapons.
"This is not something that a humane or civilised world can ignore," he said. "The only possible explanation of what we've been able to see is that it was a chemical attack."
He said the UN's priority was to allow inspectors onto the sites of the attacks but so far that had not been allowed.
"Already it seems that the Assad regime has something to hide - why else wouldn't they allow the UN team to go there?"
Hague said he hoped to speak to the Russian foreign minister later today.
Defence Secretary Philip Hammond has said that anyone found to be responsible for an alleged chemical attack in Damascus "should be in doubt that they will be held to account".
He said Britain is pushing with the "utmost urgency" for UN inspectors to be given access to the sites to make an "objective assessment".
Sweden's foreign minister Carl Bildt has said he believes Syrian forces are to blame for the alleged chemical attack, based on the evidence he has seen.
Writing in Swedish on his official blog, Mr Bildt said:
I have a hard time coming to any conclusion other than that a deadly chemical substance has been used in the attack carried out by the regime's forces between Tuesday and Wednesday on this opposition-controlled area.
He also said that if such an attack was confirmed by UN inspectors, he believes it would force Russia to reconsider its position and perhaps result in stronger action by the UN Security Council.
These are the images of the remains of rockets which, according to the men stood by them, delivered poisonous gas to a suburb of Damascus.Read the full story ›
US President Barack Obama has described allegations of a chemical attack in Syria as a "big event of grave concern" and said that it would be "very troublesome" if they were verified.
He told CNN's 'New Day' programme that he does no expect the Syrian regime of President Bashar al-Assad to cooperate, based on previous experience.
Asked about the so-called "red line" that he previously said a chemical attack would represent, he admitted he still had to look at the latest event in detail.