Several US officials told CNN on Tuesday that ISIS terrorist have fired mustard gas at the Qayarrah air base, just south of Mosul city.
Both American and Iraqi forces are stationed in the base.
The agent, however, is said to have a “low purity” and “poorly weaponized,” an official said, with a second one calling it “ineffective.”
“It was ISIS that fired at the base, since the terror group has been making mustard agent for some time,” CNN said in its report, citing the Pentagon’s assessment of the situation.
There have been no reported casualties.