U.S. receives multiple chemical exposure reports in Syria attack, but no concrete conclusion found

The United States has received numerous reports that appear consistent with chemical exposure after an attack by Syrian government forces in northwest Syria, but it has made no definitive conclusion, a State Department spokeswoman said on Thursday.

"We do have numerous sources including interviews with those present during the attack that did report that a number of opposition fighters were taken to local hospitals and presented symptoms that were consistent with chemical exposure," State Department spokeswoman Morgan Ortagus told reporters.

"We don't have any definitive conclusions yet as we continue to investigate," she said.