Roll of Honor
Jonathan Randall Koleski
Incident
Deputy Sheriff Jonathan Koleski and Deputy Sheriff Marshall Ervin were shot and killed while serving a felony theft warrant at 2474 Hampton Glen Court in Marietta shortly before 8:00 pm.
They were taking the subject into custody when another subject inside the home confronted them with a firearm. Both deputies gave commands for the man to drop the firearm before an exchange of shots. Both deputies suffered fatal wounds. The wanted subject and the shooter both barricaded themselves in the home but were both taken into custody later in the night.
The man who shot Deputy Ervin and Deputy Koleski plead guilty to murder in December 2022 and was sentenced to two life terms in prison.
Deputy Sheriff Koleski was a United States Army and Georgia National Guard veteran and had served with the Cobb County Sheriff's Office.
Survivors
He is survived by his wife, mother, two sisters, and two brothers.
In Our Keeping
- Permanent identifier
BO-US-GA-49C2BADF- Stewardship
- Maintained by NeuraWeb Global Inc.
- Added to badge.nw
- April 2, 2026
- Last updated
- July 23, 2026
Honored here by 1 sentinel - 1 tribute.
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Tributes
I served 1985 to 1993. You served too, before the badge - different uniform, same idea. You go where you are sent and you do not get to pick the call.
Deputy Sheriff Koleski gave the Cobb County Sheriff's Office 15 years.
Thank you for your service to the Marietta community. Thank you for your service before it. Gone but never to be forgotten.
Rest easy, brother.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Military Service
Jonathan Randall Koleski served in the United States military before joining law enforcement. Full service record available on salute.nw.
Deputy Sheriff Jonathan Randall Koleski is one of 17,623 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 54.2% of all 32,508 officers honored here.
In GA, 548 of 903 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 60.7% of this state's fallen. That is 6.5 percentage points above the national rate of 54.2%.
At Cobb County Sheriff's Office, 3 of 3 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 100% of this agency's fallen.
National Cause Distribution
How Felonious compares to all causes of officer death in the memorial record. Jonathan Randall Koleski's cause is highlighted.
How Jonathan Randall Koleski Compares
Offender Outcome
Sentenced to life
When Felonious Deaths Occur
Monthly distribution of Felonious deaths across the full memorial record. Jonathan Randall Koleski is highlighted in Sep.
Weapons Used Against Officers
Most common weapons in felonious officer deaths. Jonathan Randall Koleski was killed by gun; unknown type.
Incident Location
Others Who Wore This Badge
2 officers from Cobb County Sheriff's Office are honored on badge.nw.
