Trooper William John Antoniewicz

Trooper William John Antoniewicz

Utah Highway Patrol, Utah

End of Watch Sunday, December 8, 1974

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William John Antoniewicz

Trooper Antoniewicz was shot during a traffic stop on I-80 near Echo Junction.

While approaching the vehicle, the suspect shot him several times with a .38-caliber handgun. The man then kicked Trooper Antoniewicz in the face several times before fleeing. The suspect was apprehended 18 months later. The first trial resulted in a hung jury, and the man pled guilty to a reduced charge of second-degree murder in order to avoid a second trial. He was released after serving 12 years of a 15-year sentence.

Trooper Antoniewicz had been with the Utah Highway Patrol for five months.


  • Age 27
  • Tour 5 months
  • Badge Not available

Incident Details

  • Cause Gunfire
  • Weapon Handgun; .38 caliber
  • Offender Pled guilty

traffic stop

Most Recent Reflection

View all 13 Reflections

Sorry this is a few days late. You live on in the minds and hearts of your fellow troopers and officers. I can't believe the piece of trash who killed you is still using oxygen that would be better served in the lungs of a hyena.

Robert Kirby, Historian
Utah Law Enforcement Memorial

December 13, 2022

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