Police in Elkhart County are investigating an apparent hit and run that has left an Elkhart teenager with a broken leg and facial injuries. Police say 17 year-old Tiffany Burchard was operating a moped on State Road 120 west of County Road 131, near Bristol, Saturday around 9:30 pm, when she was hit from behind by a vehicle. The driver of the vehicle left the scene. Burchard was airlifted to South Bend Memorial Hospital for treatment. No word of any description of the vehicle or any possible suspects.