WELLINGTON, Kansas (AP) – Authorities are investigating the death of southern Kansas jail inmate who fell ill while he was being moved between facilities.

The Wellington Daily News reports the 45-year-old man became semi-conscious Tuesday during the drive back to the Sumner County Jail from a facility in Larned.

Sheriff’s Capt. Mike Yoder said officers took the inmate directly to the Sumner Regional Medical Center, where he later died. Yoder says the man had been cooperative during the trip, and may have died from health-related issues.

The man’s name has not been released. The Kansas Bureau of Investigation and the Sumner County Sheriff’s Department are investigating.