The US State Department said that at this time "we are unable to conclusively determine chemical weapons use" in Syria following reports of an attack.
Spokesperson Psaki: We have been unable to conclusively determine chemical weapons use, are working urgently to gather information. #Syria
State Department spokeswoman Jen Psaki said that if the reports of an attack were true, "It would be an outrageous and flagrant escalation" of the use of chemical weapons by Bashar al-Assad's government.
Britain has directly accused the Assad regime of gassing hundreds of Syrian civilians amid warnings only 48 hours remain to find proof.
New videos show the eyewitness accounts of four men who witnessed an alleged chemical attack on Zamalka, a suburb of Damascus.
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.