HARTINGTON, Neb. (AP) — Authorities are investigating the death of a man found unresponsive in a jail cell in northeast Nebraska.

The Cedar County Sheriff’s Office says 52-year-old Frank Potts Jr. was found unconscious early Tuesday at the Cedar County Jail in Hartington. Officials say emergency responders attempted to revive him but he was pronounced dead.

Potts was at the jail after he was arrested Monday night on suspicion of driving under the influence of alcohol, resisting arrest and refusing a chemical test.

Additional information about the death was not released. The Nebraska State Patrol is investigating.