A U.S. soldier was lightly wounded when a patrol came under fire in Syria on Wednesday, the top coalition military spokesman in Iraq and Syria tweeted.

“One U.S. Soldier had a minor superficial scratch while operating their equipment,” Army Col. Myles Caggins III tweeted on Wednesday. “The soldier is back at work.”

Fox News producer Lucas Tomlinson retweeted video that appeared to show the U.S. troops being shot at.

The incident happened near Qamishli, Syria, when the patrol came across a checkpoint manned by pro-Syrian regime forces, Caggins tweeted.

“After Coalition troops issued a series of warnings and de-escalation attempts, the patrol came under small arms fire from unknown individuals,” Caggins tweeted. “In self-defense, Coalition troops returned fire. The situation was de-escalated and is under investigation. The Coalition patrol returned to base.”