Katara Smith, a 38-year-old inmate at the Omaha Community Corrections Center, was discovered missing about 6 p.m. Tuesday.
The center is the least restrictive in the Nebraska Department of Correctional Services. Inmates there are allowed to work in the community and engage in other community activities.
Smith had been incarcerated for robbery and use of a weapon in Douglas County and assault in Lancaster County. He was scheduled for a parole hearing in July.
Anyone with information is asked to contact the Nebraska State Patrol.