Roll of Honor
Incident
Deputy Sheriff John Sack was shot and killed while serving a warrant on a man for a code violation for not cutting his grass. Deputy Sack told the man to get his ATM card so that he could post bail. As Deputy Sack exited the residence at 2102 North University Street, in Peoria, to wait for the man he was shot in the back. The man was shot and killed in the ensuing standoff. Deputy Sack was a U.S. Army Reserve veteran and had served with the Peoria County Sheriff's Office for 20 years.
Survivors
He was survived by his wife, son and two daughters.
In Our Keeping
- Permanent identifier
BO-US-IL-F9297DA3- 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 Sack gave the Peoria County Sheriff's Office 20 years.
Thank you for your service to the Peoria community, and 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
John Mullen Sack served in the United States military before joining law enforcement. Full service record available on salute.nw.
Deputy Sheriff John Mullen Sack 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 IL, 842 of 1,318 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 63.9% of this state's fallen. That is 9.7 percentage points above the national rate of 54.2%.
At Peoria County Sheriff's Office, 3 of 4 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 75% of this agency's fallen.
National Cause Distribution
How Felonious compares to all causes of officer death in the memorial record. John Mullen Sack's cause is highlighted.
How John Mullen Sack Compares
Offender Outcome
Shot and killed
When Felonious Deaths Occur
Monthly distribution of Felonious deaths across the full memorial record. John Mullen Sack is highlighted in Oct.
Weapons Used Against Officers
Most common weapons in felonious officer deaths. John Mullen Sack was killed by gun; unknown type.
Incident Location
Others Who Wore This Badge
3 officers from Peoria County Sheriff's Office are honored on badge.nw.
