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Marshal

Alonzo Theodore "Lon" Larsen

Mount Pleasant Police Department — Mount Pleasant, UT

Felonious

End of Watch October 15, 1945

Age 40

The Vigil Panel 82 ›

Gender Male

Incident Service The Sacrifice

Incident

Marshal Alonzo Larsen was shot and killed after being called to a local cafe to deal with an unruly customer. He had removed the customer from the cafe and placed him in the cab of a pickup truck. As he talked to the man's wife, the man removed a pistol from the glove box and shot the marshal in the back. He then exited the truck and shot the marshal a second time. The suspect was arrested and sentenced to life in prison. The suspect died in prison in 1955.

Survivors

Marshal Larsen was survived by his wife.

In Our Keeping

Permanent identifier: BO-US-UT-EC9BCBD4
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.
Marshal Larsen served with the Mount Pleasant Police Department.
Thank you for your service to the Mount Pleasant community. Gone but never to be forgotten.
Rest easy, Marshal Larsen.

— S. Vincent Anthony, U.S. Army 1985-1993

Agency

Department Mount Pleasant Police Department

Location Mount Pleasant, UT

Platform Identity mppd.sanpete.ut.us.gov.nw

Service Record

End of Watch October 15, 1945

Age 40

Gender Male

Incident Details

Cause Felonious

Weapon Handgun; .38 caliber

Offender Died in prison

Marshal Alonzo Theodore "Lon" Larsen 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 UT, 84 of 138 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 60.9% of this state's fallen. That is 6.7 percentage points above the national rate of 54.2%.

Mount Pleasant Police Department

of 1 officers

100% Felonious

UT — Statewide

of 138 officers

60.9% 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. Alonzo Theodore "Lon" Larsen'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 Alonzo Theodore "Lon" Larsen Compares

Age at End of Watch

This officer

Avg for Felonious: 39.0 years

Offender Outcome

Died in prison

When Felonious Deaths Occur

Monthly distribution of Felonious deaths across the full memorial record. Alonzo Theodore "Lon" Larsen is highlighted in Oct.

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. Alonzo Theodore "Lon" Larsen was killed by handgun; .38 caliber.

Gun; Unknown type

5,083

Handgun

2,077

Shotgun

922

Officer's handgun

909

Automobile; Alcohol involved

530

Rifle

518