IDAHO FALLS, Idaho (AP) — A speeding car carrying six Idaho Falls teens crashed on a gravel road and rolled, killing a 17-year-old girl and injuring the other five. The Bonneville County sheriff's office says the 17-year-old boy who was driving was treated for his injuries and taken into custody on suspicion of vehicular manslaughter. He was being held in a juvenile detention center. Four other passengers also were taken to Eastern Idaho Regional Medical Center. The crash happened west of Idaho Falls shortly after midnight Sunday. It remains under investigation.