Islamic State militants may have fired a chemical rocket at American troops based in Iraq, the US military says.
A
rocket that landed within several hundred yards of US troops at Qayara
air base near Mosul may have contained mustard agent, it said.No one was hurt in the attack on the base, which is home to several hundred US soldiers.
If confirmed, it would be the first chemical weapons attack on coalition forces in Iraq.
Troops stationed at the base are equipped to deal with chemical attacks.
"Unless you are right next to [the shell], exposure is unlikely," a Pentagon official told Fox News.
Two field tests were conducted after the troops saw what they thought was a suspect "oily" substance. The first test came back positive but the second was negative, CNN reports.
The fragment has been sent to a laboratory for further testing.
- 'IS making and using chemical weapons'
- Islamic State and chemical weapons use
IS is suspected of using sulphur mustard gas last year in an attack on Kurdish forces in Iraq.

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