(AP) — A 20-year-old Nebraska woman is going to prison for helping hide the body of a Denver man in the northwest corner of the state months before her boyfriend died in an armed standoff.

Rose Siefke of Hemingford was sentenced Monday to 20 to 60 months in prison for being an accessory to a felony in the death of 38-year-old Josh Bullock.

Box Butte County District Court Judge Travis O’Gorman says Siefke hid what she knew about the Bullock’s death for months.

Prosecutors say Siefke helped her boyfriend, Andres Gonzalez, hide Bullock’s body in December 2011.

Gonzalez was killed in June 2012 after a daylong standoff with police in Alliance where he wounded three officers. Before his death, Gonzalez admitted killing Bullock and burying the body in Dawes County.