The U.S.-led coalition carried out an early-morning helicopter landing operation in a part of northern Syria held by Turkish-backed rebels, a spokesperson for the rebel group told Reuters in what he said was the first raid of its kind in the area.
The U.S.-led coalition, formed to fight the Islamic State group in Iraq and Syria (ISIS), could not immediately be reached for comment.
"Till now the circumstances are unclear," a spokesman for the Turkey-backed Syrian National Army (SNA) Major Youssef Hamoud told Reuters.
