BOISE, Idaho -

A former employee at Idaho's largest private prison who was fired after the state launched an investigation into allegations of contract fraud is suing Corrections Corporation of America because he says he's taking the blame for the company's wrongdoing.

Shane Jepsen was the chief of security at the Idaho Correctional Center when CCA fired him earlier this year.

In a lawsuit filed in federal court this week, Jepsen says he began warning then-warden Tim Wengler and other CCA officials of vacancies and inaccurate staffing reports back in 2010. He contends CCA made him the scapegoat for staffing fraud when the state began investigating.

Wengler and the other CCA officials have denied having any knowledge of the staffing fraud before the end of 2012, when the company launched an internal investigation.