All six U.S. service members aboard a military plane that went down over Iraq have been killed, following earlier reports of an ongoing rescue effort after the crash.

A U.S. military plane hit a road barrier during training in Laoac town, Pangasinan Province, Philippines, on February 24, injuring five personnel. The pilot and two others were hospitalized, while two more were treated at the scene.

The buildup of more than 150 planes comes after nuclear talks between the two nations concluded last week without a deal.