Conroy G. O'Brien
Agency patch
Trooper

Conroy G. O'Brien

Kansas Highway Patrol — Topeka, KS
Felonious
End of Watch May 24, 1978
Age 26
Tour of Duty 4 yrs
Badge 108
The Vigil Panel 120 ›
Gender Male

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 He was granted parole in 2025, but the decision was revoked after it was criticized.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

Location Topeka, KS
Platform Identity khp.ks.us.gov.nw

Service Record

End of Watch May 24, 1978
Tour of Duty 4 yrs
Age 26
Badge Number 108
Gender Male

Incident Details

Cause Felonious
Weapon Officer's handgun
Offender Sentenced to consecutive life terms

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.

Kansas Highway Patrol
5
of 11 officers
45.5% Felonious
KS — Statewide
237
of 335 officers
70.7% Felonious
Nationwide
17,623
of 32,508 officers
54.2% Felonious

National Cause Distribution

How Felonious compares to all causes of officer death in the memorial record. Conroy G. O'Brien's cause is highlighted.

Felonious
17,623 (54.2%)
Accident
10,088 (31%)
Illness
2,974 (9.1%)
Cardiac
1,306 (4%)
Undetermined
260 (0.8%)
Suicide
256 (0.8%)
vehicular
1 (0%)

How Conroy G. O'Brien Compares

Age at End of Watch
26
This officer
Avg for Felonious: 39.0 years
Years of Service
4
This officer
Avg for Felonious: 8.5 years

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.

Jan
1,392
Feb
1,295
Mar
1,373
Apr
1,517
May
1,505
Jun
1,443
Jul
1,587
Aug
1,516
Sep
1,553
Oct
1,371
Nov
1,447
Dec
1,624

Weapons Used Against Officers

Most common weapons in felonious officer deaths. Conroy G. O'Brien was killed by officer's handgun.

Gun; Unknown type
5,083
Handgun
2,077
Shotgun
922
Officer's handgun
909
Automobile; Alcohol involved
530
Rifle
518

Incident Location