Authorities are investigating a fiery car crash that killed a person in Somerville. Emergency crews were called to the Somerville Road just before midnight Thursday where they found a vehicle on fire. The Lincoln County Sheriff’s Office say the car was heading north when it ran off the road and hit a tree. The driver was found dead inside once the fire was put out. The body and the vehicle have been taken to the State Police Crime Lab.The driver’s name has not been released. State police are reconstructing the crash.