Roll of Honor
Incident
Constable John Mancos was stabbed to death while attempting to serve a warrant on a woman at 1050 Garfield Street in Braddock Park.
The woman's husband answered the door when Constable Mancos knocked on it and without warning started slashing at him. Constable Mancos was knocked to the ground and stabbed in the abdomen and the back multiple times before he was able to draw his service weapon. He was able to shoot the subject in the leg, wounding him. The man, age 45, ran to a nearby home where he was arrested a short time later. He was charged with murder.
An unarmed friend of Constable Mancos who had accompanied him to serve the warrant was also injured when he attempted to disarm the subject as he stabbed the constable.
Constable Mancos was survived by his wife.
Survivors
Constable Mancos was survived by his wife.
In Our Keeping
- Permanent identifier
BO-US-PA-FE782F2A- Stewardship
- Maintained by NeuraWeb Global Inc.
- Added to badge.nw
- August 2, 2026
- Last updated
- August 2, 2026
Honored here by 1 tribute.
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Tributes
You barely got started.
Constable Mancos gave the Pennsylvania State Constable 1 year.
Thank you for your service to the Pittsburgh community. Gone but never to be forgotten.
Rest easy, Constable Mancos.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Constable John Mancos is one of 1 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 0% of all 97,772 officers honored here.
In PA, 597 of 1,261 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 47.3% of this state's fallen. That is 47.3 percentage points above the national rate of 0%.
At Pennsylvania State Constable - Allegheny County, 10 of 11 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 90.9% of this agency's fallen.
National Cause Distribution
How Felonious compares to all causes of officer death in the memorial record. John Mancos's cause is highlighted.
How John Mancos Compares
When Felonious Deaths Occur
Monthly distribution of Felonious deaths across the full memorial record. John Mancos is highlighted in Jul.
Weapons Used Against Officers
Most common weapons in felonious officer deaths. John Mancos was killed by edged weapon; knife.
Incident Location
Others Who Wore This Badge
10 officers from Pennsylvania State Constable - Allegheny County are honored on badge.nw.
