LINCOLN, Neb. -- A northeast Nebraska man previously convicted of murder is heading back to prison after being convicted on a federal firearm charge.

Acting U.S. Attorney Steven Russell announced Thursday that 63-year-old Daniel John Denny, of Niobrara, was sentenced to 15 months in prison following his conviction for being a felon in possession of a firearm. Russell said the sentencing occurred on Wednesday in federal court in Lincoln.

Denny pleaded guilty to the offense in August of this year. After he completes his prison sentence, Denny will also serve two years on supervised release. There is no parole in the federal system.

Denny was previously convicted of second-degree murder in Knox County District Court in June of 1977.

On the evening of July 8, 2021, Denney was contacted by the Santee Sioux Tribal Police. Residents in the area had called police to report a suspicious person walking on their property. The police discovered that Denny had a .22 caliber rifle with him, and he was arrested.

This case was investigated by the Santee Sioux Tribal Police, the Federal Bureau of Investigation, and the Bureau of Alcohol, Tobacco, Firearms, and Explosives, and it was part of Project Safe Neighborhoods.