OMAHA, Neb. (AP) — Authorities are investigating the death of a 43-year-old inmate at the Douglas County Jail in Omaha.

The county corrections department said Joseph Losteiner was found unresponsive in a single cell shortly after midnight on Friday.

Staff members announced a medical emergency and tried to resuscitate Losteiner. He was later pronounced dead at an Omaha hospital.

Losteiner was booked into the jail Thursday night on charges of theft, flight to avoid arrest, leaving the scene of an accident and other charges. He had not made an initial court appearance.