An Investigation Is Underway At The Sullivan County Detention Center Involving The Death Of A Correctional Facility Inmate. Officers Were Notified By Other Inmates Saturday That 55 Year Old Gregory Darnell Had Stopped Breathing. He Was Transported To Bristol Regional Medical Center Where He Was Later Pronounced Dead. The Inmates Housed With Darnell Claimed He Had Been Snoring Loudly When It Appeared He Stopped Breathing. Darnell Was Serving Time For A Dui Conviction. No Foul Play Is Suspected But The Incident Remains Under Investigation. An Autopsy Has Been Ordered.