(AP) — Authorities say they’ve captured an inmate who escaped the Thurston County Jail in the northeast Nebraska city of Pender.

Norfolk police took 39-year-old Mark Kuehn into custody around 5 p.m. Thursday. He’d been spotted at an apartment building on the southeast side of Norfolk.

Jailers discovered that he was missing on Wednesday morning. Thurston County Sheriff Shelly Perez says Kuehn pulled a window air-conditioning unit out of his cell window and squeezed between two metal bars behind it.

The jail is just blocks from Pender schools, so they were locked down. Schools in nearby Wayne were locked down, too.

Kuehn has been in jail since his conviction on two counts of theft. He’s also a sex offender who was convicted in Stanton County.