The cause of an early morning wreck is still under investigation. Just after 1am this morning, emergency personnel were dispatched to a one-car wreck on Hwy 421 about a mile east of East of Windy Gap. An 18-year-old male, identified as Logan Byrd of North Wilkesboro, was found with the overturned vehicle. Byrd was apparently thrown from the car when it went off the road and overturned. He was transported to Baptist Hospital where he is listed in Critical Condition. Again, the cause of the wreck is unknown as that investigation by NC Hwy Patrol is ongoing.