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Incident
Detective Sergeant Mason Griffith was shot and killed at Casey's Convenience Store at 115 Highway 19 in Hermann around 9:30 pm.
Sergeant Griffith and another officer were responding to a disturbance at a convenience store. When the officers arrived, a shootout occurred. Both officers were shot. One officer is in serious but stable condition. Sergeant Griffith succumbed to his injuries at Hermann Area District Hospital.
The subject shot both officers and fled the scene. He has a long history of criminal charges, with multiple outstanding felony warrants. Additionally, there is a warrant for his arrest for not showing up to court in 2022. He barricaded himself in a home near the shooting and was taken into custody the next day at 2 pm by the Missouri Highway Patrol SWAT team. He stated that he wanted to commit suicide by cop. He was convicted of first-degree murder and nine additional charges.
Sergeant Mason had served with the Hermann Police Department for over 12 years and was the part-time Chief of Police of the Rosebud Police Department and Reserve Deputy Sheriff of the Gasconade County Sheriff's Office.
Survivors
He is survived by his wife, two sons, mother, and father.
In Our Keeping
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- August 2, 2026
- Last updated
- August 2, 2026
Honored here by 1 tribute.
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Tributes
I never knew you. I am standing here anyway.
Detective Sergeant Griffith gave the Hermann Police Department 12 years.
Thank you for your service to the Hermann community. Gone but never to be forgotten.
Rest easy, Detective Sergeant Griffith.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
The Sacrifice · Felonious
Mason is the only officer of Hermann Police Department remembered here.
Mason is one of 527 officers killed feloniously in MO, 63.6% of the 829 remembered there.
Mason is one of 15,743 officers killed feloniously in the United States, 57.1% of the 27,551 remembered there.
Mason is one of 17,631 officers killed feloniously worldwide, 51.7% of the 34,117 remembered here.
34,117 officers are remembered on this memorial. Each number below is one of them.
Time
In 2023, 1 officer in MO was killed feloniously, the 106th heaviest of 146 years on record. The heaviest was 1920, with 16.
In 2023, 61 officers in the United States were killed feloniously, the 123rd heaviest of 213 years on record. The heaviest was 1921, with 248.
In 2023, 68 officers worldwide were killed feloniously, the 114th heaviest of 265 years on record. The heaviest was 1921, with 516.
Who
Mason was 34. Of the 477 killed feloniously in MO whose age is recorded, half were between 31 and 48; the middle age was 39. Mason had served 12 years; the middle length of service was 6 years.
Mason was 34. Of the 14,220 killed feloniously in the United States whose age is recorded, half were between 31 and 47; the middle age was 38. Mason had served 12 years; the middle length of service was 6 years.
Mason was 34. Of the 15,854 killed feloniously worldwide whose age is recorded, half were between 30 and 46; the middle age was 38. Mason had served 12 years; the middle length of service was 6 years.
When
March holds 8% of these deaths in MO; December holds the most, 11%. Sundays: 16.9%.
March holds 7.5% of these deaths in the United States; December holds the most, 9.4%. Sundays: 15.2%.
March holds 7.8% of these deaths worldwide; December holds the most, 9.2%. Sundays: 15.2%.
How
Felonious deaths account for 100% of all 1 deaths at Hermann Police Department. The weapon recorded was gun; unknown type, in 100% of these deaths.
Felonious deaths account for 63.6% of all 829 deaths in MO, the most common cause. The weapon recorded was gun; unknown type, in 7% of these deaths.
Felonious deaths account for 57.1% of all 27,551 deaths in the United States, the most common cause. The weapon recorded was gun; unknown type, in 9.5% of these deaths.
Felonious deaths account for 51.7% of all 34,117 deaths worldwide, the most common cause. The weapon recorded was gun; unknown type, in 8.5% of these deaths.
Where
Where the Name Is Cut
National Law Enforcement Officers Memorial · Panel 18-E
What is kept
Photographs, film, sound and papers — what survived a life.
Others Who Wore This Badge
0 officers from Hermann Police Department are honored on badge.nw.