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Crime & Justice • Murder

Brian Cohee

Brian Thomas Cohee Jr.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Brian Thomas Cohee Jr. is an American convicted murderer from Colorado, known for the 2021 killing of Warren Barnes in Grand Junction. A jury found him guilty of first-degree murder and related charges in 2023, and he was sentenced to life in prison without parole.

Background

Brian Cohee Jr. is a Colorado man born in 2002 who became known publicly because of his involvement in a high-profile murder case in Grand Junction.

The murder of Warren Barnes

On February 27, 2021, Cohee killed 69-year-old Warren Barnes under a highway overpass in Grand Junction, Colorado. Reporting on the case says the killing involved stabbing and the later dismemberment of the body.

Trial and conviction

Cohee was tried in Mesa County and convicted on February 3, 2023, of first-degree murder and two tampering charges. He was sentenced to life without parole for murder and additional years for the other convictions.

Incarceration and public coverage

Later reports placed Cohee at Buena Vista Correctional Facility. The case drew widespread media attention because of its graphic facts and the insanity defense raised at trial.

Key facts

  • Cohee was 19 years old when Warren Barnes was killed in Grand Junction, Colorado, on February 27, 2021.
  • A Mesa County jury found Cohee guilty of first-degree murder, tampering with a deceased human body, and tampering with evidence.
  • He was sentenced to life in prison without the possibility of parole, plus additional prison time for the tampering convictions.
  • Media coverage noted that Cohee pleaded not guilty by reason of insanity, but the jury rejected that defense.

Frequently asked questions

Who is Brian Cohee?
Brian Cohee Jr. is an American man convicted in Colorado of the 2021 murder of Warren Barnes.
What was Brian Cohee convicted of?
He was convicted of first-degree murder, tampering with a deceased human body, and tampering with evidence.
What sentence did Brian Cohee receive?
He received life in prison without the possibility of parole for murder, plus additional prison time for tampering-related convictions.
Who was Warren Barnes?
Warren Barnes was a 69-year-old man from Grand Junction, Colorado, who was killed in February 2021.
Did Brian Cohee use an insanity defense?
Yes. Reporting says he pleaded not guilty by reason of insanity, but the jury found him guilty.
Where is Brian Cohee imprisoned?
Reports say he was held at Buena Vista Correctional Facility in Colorado as of 2025.

References

  1. Wikipediahttps://en.wikipedia.org/wiki/Murder_of_Warren_Barnes
    Supports: Birth date, victim name, conviction, sentence, and incarceration location.
  2. The Independenthttps://www.independent.co.uk/news/world/americas/crime/brian-cohee-footage-murder-confession-b2522100.html
    Supports: Overview of the case, conviction, and sentence.
  3. Crime + Investigationhttps://www.crimeandinvestigation.co.uk/articles/brian-cohee-murder-warren-barnes
    Supports: Summary of the killing, charges, and reported motive.
  4. The Daily Sentinelhttps://www.gjsentinel.com/news/western_colorado/evidence-presented-in-hearing-on-brutal-murder-case/article_e05926b0-1bf9-11ec-9e34-47336e610414.html
    Supports: Pretrial reporting and probable-cause hearing.
  5. The Daily Sentinelhttps://www.gjsentinel.com/a-look-back-cohee-trial-top-crime-story-of-2023/article_0874ef32-9937-11ee-8995-a3539ebe6dc3.html
    Supports: Trial outcome and sentencing.
  6. TooFabhttps://www.toofab.com/2024/04/01/brian-cohee-documentary-bodycam-footage-arrest-murder-homeless-man/
    Supports: Reported insanity plea and jury finding.