Twenty-two US service members were injured in a helicopter "mishap" in northeast Syria, the US Central Command said late on Monday.
Ten service members had been evacuated to higher care facilities outside the Central Command area of responsibility, it said in a statement.
The cause of the incident on Sunday was under investigation, although no enemy fire was reported, said the US Central Command, which oversees US forces in the Middle East.
More to follow.

US peace envoys meet Zelenskyy in Kyiv after Putin talks
US targets three Iranian oil vessels after attack on Navy ships
Four killed in Israeli strikes on southern Lebanon
Indonesia's Anak Krakatau eruption halts flights, schools, fishing
Putin says US-Russia contacts beneficial as talks begin with Witkoff and Kushner
Chinese national rescued from Nepal tunnel 10 days after flash flood
US envoys Witkoff, Kushner arrive in Moscow for talks on peace in Ukraine
One dead, 11 people missing after mudslide in China's Jiangxi province
