Incident
Sergeant O'Donnell was shot and killed as he and another trooper escorted a prisoner back to New Jersey. The 30-year-old prisoner, a former mental patient wanted in Newark for murdering his wife with an axe, had been arrested in Pennsylvania and had agreed to turn himself in to New Jersey authorities. Sergeant O'Donnell and another trooper met the suspect on the Pennsylvania side of a railroad bridge and began to walk the suspect back across the river. As they got to the midpoint of the bridge the suspect attempted to jump over the railing, but was stopped by Sergeant O'Donnell. During the ensuing struggle the suspect was able to grab Sergeant O'Donnell's revolver and shot him twice in the abdomen, causing fatal wounds. He also shot the other trooper who later recovered from his wounds. He was captured later that night in a wooded area near the scene. On September 19, 1945, he was convicted of Sergeant O'Donnell's murder and sentenced to life. Four months later he was declared insane and the trial for his wife's murder was put off indefinitely. He died in prison December 18, 1962. Sergeant O'Donnell had served with the agency for 17 years.
Survivors
He was survived by his wife.
In Our Keeping
- Permanent identifier
BO-US-NJ-67BF24A5- 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.
Sergeant O'Donnell gave the New Jersey State Police 17 years.
Thank you for your service to the people of New Jersey. Gone but never to be forgotten.
Rest easy, Sergeant O'Donnell.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Sergeant Cornelius A. O'Donnell 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 NJ, 264 of 646 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 40.9% of this state's fallen. That is 13.3 percentage points below the national rate of 54.2%.
At New Jersey State Police, 14 of 84 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 16.7% of this agency's fallen.
National Cause Distribution
How Felonious compares to all causes of officer death in the memorial record. Cornelius A. O'Donnell's cause is highlighted.
How Cornelius A. O'Donnell Compares
Offender Outcome
Died in prison
When Felonious Deaths Occur
Monthly distribution of Felonious deaths across the full memorial record. Cornelius A. O'Donnell is highlighted in Jul.
Weapons Used Against Officers
Most common weapons in felonious officer deaths. Cornelius A. O'Donnell was killed by officer's handgun.
Others Who Wore This Badge
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