KANSAS CITY, Mo. -- A Wyandotte County judge has sentenced a man for the 2023 killing of 23-year-old Diamond Steen outside an O'Reilly Auto Parts store in Kansas City, Kansas.

Carl Ryan Kemppainen, 41, a manager at the store, was sentenced last week to more than four years in prison. He was found guilty by a jury back in May of involuntary manslaughter. He was originally charged with second-degree murder, which was later amended.

The incident happened on Sept. 18, 2023, outside the store near N. 47th Street and Parallel Parkway.

Officials said the deadly incident began when two men in their 20s walked into the O’Reilly Auto Parts store and allegedly stole something.

Kansas City, Kansas, police officers who responded to the incident found two men, including Steen, taped, bound and zip-t

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