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OKC man gets 30-year prison sentence for shooting death


An Oklahoma City man was sentenced to 30 years in prison for a guilty plea to first-degree murder.

Robert A. Carmack, 29, received a suspended life sentence with the first 30 years in the Oklahoma Department of Corrections for the shooting death of Billy Joe Gannon. He waived his right to appeal and will receive credit for the 18 months he spent in the Oklahoma County Jail.

Judge Timothy Henderson finalized Carmack’s sentence in a hearing Friday.

Carmack pleaded guilty March 14 to killing Gannon, 33. Police found Gannon dead of multiple gunshot wounds Sept. 1, 2017, in a home in the 700 block of SW 50.

A witness who was in the room during the homicide identified Carmack as the shooter, according to a court affidavit. Officers found Carmack at his residence two doors west of the crime scene.

Carmack admitted to shooting Gannon multiple times, police said. He wrote in his plea agreement paperwork that he shot Gannon deliberately, causing the victim’s death. Court records show no motive for the shooting.

The defendant disclosed in his plea agreement that he previously received counseling and medication for depression and anxiety, according to court documents.

Carmack will receive a recommendation for placement at the Joseph Harp Correctional Facility, a medium-security prison that houses inmates with delayed sentences and mental illnesses. The Lexington facility also hosts youthful offenders and inmates in need of substance abuse treatment.

Nuria Martinez-Keel

Nuria Martinez-Keel joined The Oklahoman as a court reporter in 2019. She found a home at the newspaper while interning in summer 2016 and 2017. Nuria returned to The Oklahoman for a third time after working a year and a half at the Sedalia... Read more ›