Cobb County Sheriff's Office, Georgia
End of Watch Thursday, September 8, 2022
Add to My HeroesJonathan Randall Koleski
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. He is survived by his wife, mother, two sisters, and two brothers.
Bio
- Age 42
- Tour Not available
- Badge 07072
- Military Veteran
Incident Details
- Cause Gunfire
- Weapon Gun; Unknown type
- Offender Sentenced to life
Most Recent Reflection
View all 91 ReflectionsPrayers for the family of Deputy Sheriff Koleski.
Anonymous
April 18, 2023
Recent LODD Deaths
Corporal Timothy J. O'Connor, Jr.
Pennsylvania State Police, PA
EOW: March 8, 2026
Deputy Sheriff Kaleb Mitchell
Forsyth County Sheriff's Office, NC
EOW: March 7, 2026
Master Trooper Steven J. Perry
North Carolina Highway Patrol, NC
EOW: March 1, 2026
Conservation Enforcement Officer Senior Shawn Nixon
Alabama Department of Conservation and Natural Resources - Wildlife and Freshwater Fisheries, AL
EOW: November 23, 2025
Corporal David M. Hathcock
Montgomery Police Department, AL
EOW: February 22, 2026
Correctional Officer Dustin Pedigo
Tennessee Department of Correction, TN
EOW: February 25, 2026
Deputy Sheriff Michael Hislope
Christian County Sheriff's Office, MO
EOW: February 24, 2026
Deputy Sheriff Gabriel Ramirez
Christian County Sheriff's Office, MO
EOW: February 23, 2026
Deputy Sheriff Kenneth Lewis
Fort Bend County Sheriff's Office, TX
EOW: February 23, 2026


