LINCOLN, Neb. (AP) — A prisons administrator who shared blame for hundreds of miscalculated inmate sentences has resigned from Nebraska’s corrections department.

A prisons spokesman says Kyle Poppert stepped down Monday.

Poppert served as records administrator in the Nebraska Department of Correctional Services. He was initially suspended without pay for two weeks for his role in the sentencing miscalculations, which led to the early release of hundreds of inmates.

A report by the U.S. Department of Justice concluded that Poppert’s division was plagued by poor communication. Department employees told investigators they weren’t properly trained for their jobs, and couldn’t rely on Poppert to answer their questions.

Two department attorneys, George Green and Sharon Lindgren, retired from the department under the threat of being fired. Attorney Kathy Blum was suspended for one day.