One person is dead after a two-vehicle collision occurred in Adair County Tuesday.

According to the Iowa State Patrol, at about 12:30 p.m. 18-year-old Kayci Emerson of Fontanelle was driving a Chevrolet Malibu northbound on Highway 25 near mile marker 67 when for unknown reasons her vehicle crossed the center line and collided with a southbound Chevrolet Silverado driven by 36-year-old Nathan Rigsby of Thayer. Emerson was transported by Lifenet Helicopter to Mercy Hospital in Des Moines where she later died from her injuries. Further investigation is pending by ISP. Adair County Sheriff’s Office, Adair County Ambulance, Menlo Fire and Rescue, and Iowa Department of Transportation assisted at the scene.