A 15-year-old is dead following a crash in Ringgold County.It happened South of Diagonal on Highway P-33 around 7 Friday night.Iowa State Patrol says the teen driver was traveling south when a deer caused them to swerve, losing control of the car, leading it to rollover into a ditch.The driver was ejected from the vehicle. ISP says the driver wasn't wearing a seat belt.Two other kids were also in the car at the time.They were taken to a hospital and have since been released.