Incident
Trooper Conroy O'Brien was shot and killed during a traffic stop on the Kansas Turnpike near Matfield Green. During a struggle with the three suspects, they obtained his service weapon. One of the subjects then walked him to a nearby ditch and pistol-whipped him, fracturing his skull. The man then shot him twice in the head before spitting on him. The subjects were later apprehended after a shootout with other officers. The suspects were all wanted for a string of armed robberies at the time of the shooting. One suspect turned state's evidence and served seven years, and another died in prison in 2009. The third man was sentenced to serve two consecutive life terms plus nine years. He was granted parole in 2025, but the decision was revoked after it was criticized. Trooper O'Brien had served with the Kansas Highway Patrol for four years. He was survived by his expectant wife. His daughter was born a few months later.
Survivors
He was survived by his expectant wife.
In Our Keeping
- Permanent identifier
BO-US-KS-06C7BEA2- 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.
Trooper O'Brien gave the Kansas Highway Patrol 4 years.
Thank you for your service to the people of Kansas. Gone but never to be forgotten.
Rest easy, Trooper O'Brien.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Trooper Conroy G. O'Brien 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 KS, 237 of 335 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 70.7% of this state's fallen. That is 16.5 percentage points above the national rate of 54.2%.
At Kansas Highway Patrol, 5 of 11 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 45.5% of this agency's fallen.
National Cause Distribution
How Felonious compares to all causes of officer death in the memorial record. Conroy G. O'Brien's cause is highlighted.
How Conroy G. O'Brien Compares
Offender Outcome
Sentenced to consecutive life terms
When Felonious Deaths Occur
Monthly distribution of Felonious deaths across the full memorial record. Conroy G. O'Brien is highlighted in May.
Weapons Used Against Officers
Most common weapons in felonious officer deaths. Conroy G. O'Brien was killed by officer's handgun.
Incident Location
Others Who Wore This Badge
10 officers from Kansas Highway Patrol are honored on badge.nw.









