US troops deployed near the city of Kobani in northern Syria came under artillery fire from Turkish positions, the Pentagon said, The Guardian reports.
The explosion occurred near a military outpost in northern Syria and in an area known by the Turks to have US forces present, Navy Capt Brook DeWalt said in a statement.
All US troops are accounted for, but the incident highlights the risks to US troops as Turkey wages an offensive in the region.
Turkey’s defense ministry said it had taken all measures to ensure that no US base was damaged while it responded to harassment fire that originated near the base.