Jarrett Tonn

  59 posts

Jarrett Tonn is a Vallejo police officer. He was fired for shooting and killing Sean Monterrosa in June 2020, but his termination was overturned in arbitration.

  Dec 02, 2025

ACLU decries delayed response to calls for decertification of Vallejo police officers

Last year, the ACLU called for the decertification of nine current and former Vallejo Police officers....

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  Nov 19, 2025

Former Vallejo police chief describes threats that led to his resignation

Williams described receiving a threatening greeting card, letters and emails....

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  Sep 26, 2025

Vallejo officer who killed Sean Monterrosa promoted to sergeant

Sgt. Jarrett Tonn was promoted within the last two months....

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  Oct 16, 2024

ACLU seeks decertification of nine current and former Vallejo police officers

All nine were involved in at least one fatal on-duty shooting....

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  Jun 03, 2024

Arbitrator upholds termination of former Vallejo officer for Willie McCoy shooting

Ryan McMahon was the only officer disciplined for the shooting of Willie McCoy, who was found unresponsive behind the wheel of his car in a Taco Bell drive-thru in 2019....

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  May 22, 2024

Police union president sues Vallejo after federal lawsuit fails

A lawsuit filed in Solano County echoes many of the claims VPOA president made in a federal lawsuit, which a judge dismissed last month....

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  Apr 16, 2024

Vallejo police failed to disclose military equipment as required by state law

The department took a crucial first step towards compliance after inquiries from the Vallejo Sun....

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  Dec 29, 2023

Year in review: How the Vallejo police union won in 2023

Vallejo also struggled to contend with homelessness and declining attendance in schools....

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  Dec 19, 2023

No charges for Vallejo detective who killed Sean Monterrosa in 2020

Attorney for Monterrosa family says they’re relieved to finally know what state DOJ would do, even if they didn’t like the outcome....

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  Sep 18, 2023

Vallejo police banned shooting at vehicles days after June shooting

Officer Brad Kim shot and wounded Jamazea Kittell on June 27 when Kittell allegedly drove toward him in a silver Dodge Charger....

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  Sep 14, 2023

Arbitrator found Vallejo cop’s killing of Sean Monterrosa was ‘reasonable’

The 70-page opinion provides new information about the arbitrator's reasoning in ordering the reinstatement of Detective Jarrett Tonn....

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  Sep 13, 2023

Community members demand action on Vallejo police violence as council copes with officer shortage

The family of Sean Monterrosa called for supporters to “pack the room.”...

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