Roll of Honor
Incident
Patrolman John Knorr was killed in an automobile accident while transporting an injured infant to the local hospital in the town's ambulance. The ambulance collided with another vehicle at the intersection of Haddon Avenue and Crescent Boulevard.
The infant, her father, and the three occupants of the other vehicle were also killed in the crash. Patrolman Knorr's partner suffered a fractured skull but recovered.
Patrolman Knorr had served with the agency for 6 years.
Survivors
He was survived by his wife, parents, and brother.
In Our Keeping
- Permanent identifier
BO-US-NJ-040B2211- 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 never knew you. I am standing here anyway.
Patrolman Knorr gave the Haddonfield Police Department 6 years.
Thank you for your service to the Haddonfield community. Gone but never to be forgotten.
Rest easy, Patrolman Knorr.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Patrolman John Jackson Knorr is one of 10,088 officers lost to accidents in the line of duty across the full record of this memorial — 31% of all 32,508 officers honored here.
In NJ, 258 of 646 officers were lost to accidents in the line of duty — 39.9% of this state's fallen. That is 8.9 percentage points above the national rate of 31%.
National Cause Distribution
How Accident compares to all causes of officer death in the memorial record. John Jackson Knorr's cause is highlighted.
How John Jackson Knorr Compares
When Accident Deaths Occur
Monthly distribution of Accident deaths across the full memorial record. John Jackson Knorr is highlighted in Jun.