MURRIETA (CNS) - A teenager was killed last week in a solo vehicle crash in Murrieta, police said Sunday. The crash occurred at 11:11 p.m. Thursday on Whitewood Road north of Mapleton Street, according to the Murrieta Police Department. Investigators said a vehicle traveling northbound on Whitewood Road left the roadway and slammed into a brick wall and a tree. Emergency crews found the 17-year-old driver unconscious and trapped in his vehicle and he was later pronounced dead at the scene, police said. His identity was not disclosed due to his age. An investigation into the cause of the crash is ongoing.