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Man guilty of Hermann cop’s murder gets death penalty

Franklin County officers take off Kenneth Lee Simpson’s handcuffs before his sentence hearing in Union, Mo., on Thursday, June 18, 2026. Simpson was sentenced to death by Judge Craig Hellmann in the shooting death of Hermann police Det. Sgt. Mason Griffith, and the shooting of officer Adam Sullentrup.
Pool photo by Liz Rymarev, Post-Dispatch
Franklin County officers take off Kenneth Lee Simpson’s handcuffs before his sentence hearing in Union, Mo., on Thursday, June 18, 2026. Simpson was sentenced to death by Judge Craig Hellmann in the shooting death of Hermann police Det. Sgt. Mason Griffith, and the shooting of officer Adam Sullentrup.

UNION, Mo. (KMIZ)

A judge imposed the death penalty Thursday on a man who was found guilty of murdering a Hermann police officer and injuring another in a Casey's gas station

A jury found Kenneth Simpson guilty of first-degree murder, armed criminal action, assault, drug possession and other charges in January. Jurors also recommended a death sentence for Simpson, according to previous reporting.

Judge Craig Hellman sentenced Simpson to death after hearing victim statements.

The hearing began at 1 p.m., with the sentence coming down at about 3:30 p.m.

Simpson was accused of shooting and killing Sgt. Mason Griffith and injuring Officer Adam Sullentrup in March 2023. Sullentrup testified at the sentencing hearing.

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Article Topic Follows: Crime

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Alison Patton

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