A single-vehicle accident in Cumberland County this morning resulted in one person killed and another person injured. The Tennessee Highway Patrol says a 2005 Jeep driven by 36-year-old Krista L. Brock of Crossville was traveling west at the 312 mile marker of Interstate 40 when she lost control, left the interstate and struck an embankment and multiple trees. Brock died at the scene from injuries sustained. A passenger in the Jeep, 57-year-old Deborah Lee Heminway of Crossville, sustained injuries in the accident.