TECUMSEH, Neb. (AP) — Nebraska corrections officials have identified the two inmates killed during a disturbance at a maximum security prison in the southeast corner of the state.

The state Department of Correctional Services says Donald Peacock and Shon Collins were found dead Monday as officials regained control of the Tecumseh State Correctional Institution. Both were 46.

Corrections Director Scott Frakes declined to release details of their deaths, which are being investigated. Frakes says it appears the men were killed by inmates.

Peacock and Collins were serving sentences for first-degree sexual assault of a child and visual depiction of sexually explicit conduct.

Peacock had been incarcerated since March 2014 and was serving a sentence of 40 to 50 years. Collins had been in prison since May, 2010 and was serving 66 to 80 years.