TECUMSEH, Neb. (AP) — One of five inmates charged after a deadly riot last year at the Tecumseh prison is scheduled to be sentenced later this month.

Online court records show 23-year-old Ian Yelton has pleaded guilty to attempted assault of a confined person. Prosecutors had lowered the charge in exchange for Yelton’s plea. His sentencing is set for June 27. He’s been serving up to 50 years for sexual assault.

No one has yet been charged in the deaths of two sex offenders who were found dead at the prison once order was restored after the rioting that broke out May 10, 2015. Two guards and four inmates were injured.