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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
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- 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
The Sacrifice · Felonious
Pennsylvania State Constable - Allegheny County has lost 11 officers; 10 of them killed feloniously.
John is one of 598 officers killed feloniously in PA, 47.4% of the 1,262 remembered there.
John is one of 15,742 officers killed feloniously in the United States, 57.1% of the 27,551 remembered there.
John is one of 17,622 officers killed feloniously worldwide, 51.7% of the 34,102 remembered here.
34,102 officers are remembered on this memorial. Each number below is one of them.
Time
In 1925, 2 officers at Pennsylvania State Constable - Allegheny County were killed feloniously, more than in any other year.
In 1925, 7 officers in PA were killed feloniously, the 18th heaviest of 152 years on record. The heaviest was 1918, with 16.
In 1925, 208 officers in the United States were killed feloniously, the 11th heaviest of 213 years on record. The heaviest was 1921, with 248.
In 1925, 209 officers worldwide were killed feloniously, the 12th heaviest of 265 years on record. The heaviest was 1921, with 516.
Who
John was 33. Of the 10 killed feloniously at Pennsylvania State Constable - Allegheny County whose age is recorded, half were between 33.5 and 48.8; the middle age was 40.5. John had served 1 year; the middle length of service was 1 years.
John was 33. Of the 585 killed feloniously in PA whose age is recorded, half were between 30 and 46; the middle age was 37. John had served 1 year; the middle length of service was 7 years.
John was 33. Of the 14,219 killed feloniously in the United States whose age is recorded, half were between 31 and 47; the middle age was 38. John had served 1 year; the middle length of service was 6 years.
John was 33. Of the 15,853 killed feloniously worldwide whose age is recorded, half were between 30 and 46; the middle age was 38. John had served 1 year; the middle length of service was 6 years.
When
July holds 40% of these deaths at Pennsylvania State Constable - Allegheny County, more than any other month. Wednesdays: 20%.
July holds 8% of these deaths in PA; September holds the most, 10.5%. Wednesdays: 15.4%.
July holds 9.3% of these deaths in the United States; December holds the most, 9.4%. Wednesdays: 12.9%.
July holds 9% of these deaths worldwide; December holds the most, 9.2%. Wednesdays: 13.2%.
How
Felonious deaths account for 90.9% of all 11 deaths at Pennsylvania State Constable - Allegheny County, the most common cause. The weapon recorded was edged weapon; knife, in 10% of these deaths.
Felonious deaths account for 47.4% of all 1,262 deaths in PA, the most common cause. The weapon recorded was edged weapon; knife, in 1.2% 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 edged weapon; knife, in 0.8% of these deaths.
Felonious deaths account for 51.7% of all 34,102 deaths worldwide, the most common cause. The weapon recorded was edged weapon; knife, in 0.7% of these deaths.
His people
Pennsylvania State Constable - Allegheny County has 11 officers remembered here, John among them.
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Henry Hess Jul 26, 1874
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Samuel Norman Jul 27, 1877
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William Shields Oct 16, 1903
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Thomas J. O'Sullivan
Jul 12, 1907
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Martin F. Windt
Dec 29, 1913
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Thomas Pugh Jun 15, 1916
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Peter B. Hoarty Jul 13, 1916
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John Mancos Jul 22, 1925
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Walter H. Gant Sep 16, 1925
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Martin Pluter
Apr 16, 1934
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Andrew Joseph Conroy Jan 21, 1938
Where
Where the Name Is Cut
National Law Enforcement Officers Memorial · Panel 17-E
Others Who Wore This Badge
10 officers from Pennsylvania State Constable - Allegheny County are honored on badge.nw.
