TULSA, Okla. (AP) — A former Oklahoma police officer was sentenced Friday to 25 years in prison for the 2014 killing of his daughter's boyfriend after being convicted of second-degree murder the fifth time he went on trial in the case.

U.S. District Judge Gregory Frizzell sentenced Shannon Kepler, 61, to 300 months in prison followed by three years of supervised release. He also ordered Kepler, a former Tulsa police officer, to pay restitution to cover the cost of a headstone for Jeremey Lake, who was 19 years old when Kepler killed him.

"Kepler, at the time, was sworn to uphold the law but in...