Roll of Honor
Incident
Detective Mancusi was killed when the patrol car he was riding in struck a parked truck. He and the Police Chief of Mamaroneck Police Department were traveling from Milford, Connecticut where they were questioning a burglary suspect. At 4 AM, they were traveling through Stamford, Connecticut when they crested a hill and struck a truck that was parked along the side of the road. The accident investigation determined the Mamaroneck Police Chief, who was driving, could not see the parked truck due to dirt obstructing the reflectors. Detective Mancusi and the Mamaroneck Police Chief had traveled to Milford, Connecticut where a suspect was being held for burglary. The burglaries had similarities to burglaries that had occurred in New Rochelle and Mamaroneck. Detective Mancusi was survived by his wife, two daughters, three sons, a sister and four brothers. Detective Mancusi has been commended sixteen separate times during his career with the New Rochelle Police Department. He had also served as a police officer with the New Haven Railroad Police.
Survivors
Detective Mancusi was survived by his wife, two daughters, three sons, a sister and four brothers.
In Our Keeping
- Permanent identifier
BO-US-NY-9B47C413- 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.
Detective Mancusi gave the New Rochelle Police Department 12 years.
Thank you for your service to the New Rochelle community. Gone but never to be forgotten.
Rest easy, Detective Mancusi.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Detective William E. Mancusi 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 NY, 645 of 2,147 officers were lost to accidents in the line of duty — 30% of this state's fallen. That is 1 percentage points below the national rate of 31%.
At New Rochelle Police Department, 6 of 10 officers on record were lost to accidents in the line of duty — 60% of this agency's fallen.
National Cause Distribution
How Accident compares to all causes of officer death in the memorial record. William E. Mancusi's cause is highlighted.
How William E. Mancusi Compares
When Accident Deaths Occur
Monthly distribution of Accident deaths across the full memorial record. William E. Mancusi is highlighted in Jul.
Others Who Wore This Badge
9 officers from New Rochelle Police Department are honored on badge.nw.
