Syrian Deputy Foreign Minister Faisal Mikdad met overnight with representatives of the international chemical weapons watchdog at a Damascus hotel.
A team from the Organisation for the Prohibition of Chemical Weapons (OPCW) arrived in the Syrian capital on Saturday to carry out an investigation into the alleged chemical weapons attack on the town of Douma, where opposition activists said more than 40 people were killed.
The team's arrival came hours after the United States, France and Britain launched a strike on Syrian facilities near Damascus and in central Homs.
The three nations opted to strike Syria for its apparent use of chemical weapons without waiting for a report from the inspectors because they were convinced that the Assad government had used chlorine and sarin nerve gas in Douma.
The allies also acted because of concerns that Syrian forces and their Russian allies may already have tried to clean up important evidence.
The US-led strike was launched even though the OPCW fact-finding team was due to head to Douma on Saturday.
Russia and Syria have denied that chemical weapons were used at all and said their own investigators had been to the area and found no trace of them.
Those assertions have been denounced as lies by Western officials.