A U.S. Navy ship mistakenly shot down an American fighter jet over the Red Sea early Sunday, the U.S. military said, highlighting the potential risks for international forces as they try to stop attacks on cargo ships by the Houthi militia in Yemen.

A U.S. missile cruiser shot down a Navy fighter jet in what military officials said was a “friendly fire” incident over the Red Sea on Sunday, as the U.S. military has increased its presence in the Red Sea to fight back against Iran-backed Houthi rebels in Yemen.