OMAHA, Neb. (AP) — Authorities say a 58-year-old jail inmate has died at an Omaha hospital.

The woman became unresponsive around 4:15 p.m. Wednesday in one of the Douglas County Jail housing units. Lt. Dan Scherer says staffers began CPR and called 911 for help. Scherer says the woman died at 11:10 p.m. at Creighton University Medical Center.

Scherer identified the woman as Sheryl Bentley, who was serving a 30-day sentence for drunken driving. Her sentence began on Aug. 11. She lived in Omaha.

Bentley’s death is being investigated. State law requires such investigations whenever someone dies in custody or while being taken into custody.