Twenty-two U.S. service members were injured Sunday in a “helicopter mishap” in northeastern Syria, U.S. Central Command said.
No enemy fire was reported, the military command said in a brief statement.
Ten of the injured were evacuated to “higher care facilities,” according to the statement.
The cause is under investigation, and the statement did not elaborate on the circumstances.
U.S. forces are operating in Syria to fight the Islamic State terrorist group.
Central Command said this month that it and partner forces carried out 17 operations in Syria in May that killed two Islamic State operatives and led to the detention of 20 others. Central Command has said its local partners in the country are the Syrian Democratic Forces.
A civil war broke out in Syria in 2011. The United Nations estimated last year that more than 306,000 civilians have been killed since the conflict began. More than 12 million have been displaced, either internally within Syria or outside the country, according to the U.N.’s refugee agency.
