The GBI is investigating the Thursday discovery of human remains alongside I-75 not far from the Barnesville-Jackson exit.UPDATE: The suitcase held a skull and pelvic bones. Butts County Coroner Ralph Wilson says it appeared to have been lying near I-75 for months and was too far from the road to have been thrown from a vehicle.From Rich Bahan, GBI deputy director of public affairs:On Thursday, December 28, 2017 at approximately 1:45 p.m. the Georgia Bureau of Investigation (GBI) was requested by the Butts County Sheriff’s Office to assist with a death investigation. Earlier this date a motorist searching for a lost item on the side of I-75 southbound, within a few miles of exit 201, located what is believed to be human skeletal remains. The remains were in a suitcase. It appeared that the suitcase had been at the location for some time and was not recently deposited. The remains will be sent to the GBI Medical Examiner’s Office for examination. Anyone with information concerning this case can contact the Butt’s County Sheriff’s Office at 770-775-8232 or the GBI office in Milledgeville at 478-445-4173.