U.S. Attorney Jan Sharp announced Friday that 27-year-old Jonathan D. Rooney, of Winnebago, Nebraska, was sentenced in federal court in Omaha for killing a woman and then burning her body.

Rooney was sentenced to 25 years’ imprisonment: 120 months for manslaughter and 180 months for destruction of evidence. After his release from prison, Rooney will begin a three-year term of supervised release. 

A federal jury found Rooney guilty of manslaughter and destruction of evidence in December 2021.

Rooney killed 22-year-old Kozee Decorah and then burned her body and other evidence at an abandoned cabin on the Winnebago Indian Reservation.

On May 16, 2020, Decorah called the Winnebago Police Department to report that the vehicle that she, Rooney, and their infant son were using was stuck in the mud in a remote area of the Winnebago Reservation.

When Winnebago Conservation Officers located the vehicle, they were unable to locate Decorah, Rooney, or their baby. The officers noticed a fire near midnight in an outhouse of a remote cabin.

Rooney was found in the cabin naked in a bed with the baby. Authorities noticed blood droplets around the cabin and later found human remains in the form of a skull in the fire.

The remains were identified as Decorah through dental records.

While pronouncing Rooney’s sentence, Chief Judge Rossiter noted this case involved the “tragic death of a young woman and young mother.” Chief Judge Rossiter called Rooney’s actions “unforgivable” and noted that Rooney tried to erase his deeds without care or remorse. 

This case was investigated by the Federal Bureau of Investigation, the Winnebago Police Department, the Winnebago Conservation Office, Winnebago Volunteer Firefighters, and the Nebraska State Fire Marshal.