Prosecutor: West Jordan Officer Justified in Fatal Shooting

Apr 25, 2019, 7:19 PM

SALT LAKE CITY, Utah — A West Jordan police officer was legally justified in using deadly force when he encountered a domestic violence suspect making stabbing motions with a large kitchen knife, according to Salt Lake County District Attorney Sim Gill.

“Based on the totality of the evidence and all of the information that we have, under Utah law, this was a justified use of force,” Gill said during a press conference on Thursday.

The officer-involved shooting occurred on Oct. 11, 2018, at an apartment located at 7003 South Cherry Leaf Drive in West Jordan. Three officers had responded to a domestic violence call involving Diamonte Riviore, 22, who was released from jail just two days earlier.

“This is a situation where the officers knew going into the home that they’d been called to respond to a very serious attack involving a very serious threat against a woman and her 11-month-old child,” said West Jordan Police Chief Ken Wallentine.

Once inside the apartment, officers found Riviore in the bathroom, with the door cracked open, holding a knife.

According the final report, body-camera footage “clearly shows Mr. Riviore standing in the bathroom, partially opening and then closing the bathroom door several times, while holding a knife and making motions toward the officers.”

The officers can be heard repeatedly telling Riviore to drop the knife and show his hands. The report then says Riviore made more motions with the knife, prompting two officers to deploy their Tasers—which were not successful at stopping Riviore.

“Then Mr. Riviore opened the door one final time, wider than before so that most of his body could be seen and he seemed to advance slightly toward the officers,” the report reads.

Officer Brian White then fired his weapon at Riviore, who then shut a locked the bathroom door. Officers broke down the door but were unable to revive Riviore, the report said.

“Although forensic evidence shows Officer White shot through the bathroom door,” Gill wrote in the report, “it appears from the body-worn camera recording that Officer White made the decision to use deadly force before Mr. Riviore closed the door.”

“This is certainly not a happy situation; this is not a happy outcome,” Chief Wallentine said. “As we address the problem of domestic violence in our community and all of the associated consequences we recognize that sometimes there are very tragic outcomes and this is one of them.”

KSL 5 TV Live

Top Stories

Local News

Matt Gephardt and Cindy St. Clair, KSL TV

Get Gephardt: Husband sued for deceased wife’s unpaid medical bill

Just about a year after his wife died of cancer, Keith Zipprich said he was surprised when he, himself, was slapped with a lawsuit from a debt collector trying to collect on one of her unpaid medical bills.
1 day ago
(Carissa Hutchinson/KSL TV)...
Lauren Steinbrecher and Madison Swenson, KSL TV

Gateway Inn demolition begins; community relieved and excited for new development

The first day has wrapped on demolition of the Gateway Inn, a building neighbors have long begged to come down.
1 day ago
(Kie Hale)...
Andrew Adams

Family says wreath stolen from grave of veteran in South Ogden

Family members said a holiday wreath left at the grave of a longtime public servant and veteran appears to have been stolen, and they were calling on the thief to return it.
1 day ago
Sheree Warren disappeared on Oct. 2, 1985, after leaving an office building in Salt Lake City....
Dave Cawley, KSL Podcasts

New development: Suspect in missing woman case recently failed a polygraph test

A suspect in a nearly 40-year-old Utah cold case has refused an offer of immunity from criminal charges.
1 day ago
A woman who was allegedly driving a pickup truck that ran a red light and killed another driver in ...
Pat Reavy, KSL.com

10 months after a fatal crash in West Valley, prosecutors believe they know who caused it

A woman who was allegedly driving a pickup truck that ran a red light and smashed into another car, killing the driver in West Valley in February, is now facing criminal charges.
1 day ago
Major Kristen 'BEO' Wolfe...
Mike Anderson

Hill AFB Demonstration Team leader very confident in F-35

F-35 pilots at Hill Air Force are moving forward at full speed even though the investigation of a crash at the base last October is still underway.
1 day ago

Sponsored Articles

house with for rent sign posted...
Chase Harrington, president and COO of Entrata

Top 5 reasons you may want to consider apartment life over owning a home

There are many benefits of renting that can be overshadowed by the allure of buying a home. Here are five reasons why renting might be right for you.
Festive kitchen in Christmas decorations. Christmas dining room....
Lighting Design

6 Holiday Decor Trends to Try in 2022

We've rounded out the top 6 holiday decor trends for 2022 so you can be ahead of the game before you start shopping. 
Happy diverse college or university students are having fun on their graduation day...
BYU MBA at the Marriott School of Business

How to choose what MBA program is right for you: Take this quiz before you apply!

Wondering what MBA program is right for you? Take this quiz before you apply to see if it will help you meet your goals.
Diverse Group of Energetic Professionals Team Meeting in Modern Office: Brainstorming IT Programmer...
Les Olson

Don’t let a ransomware attack get you down | Protect your workplace today with cyber insurance

Business owners and operators should be on guard to protect their workplace. Cyber insurance can protect you from online attacks.
Hand turning a thermostat knob to increase savings by decreasing energy consumption. Composite imag...
Lighting Design

5 Lighting Tips to Save Energy and Money in Your Home

Advances in lighting technology make it easier to use smart features to cut costs. Read for tips to save energy by using different lighting strategies in your home.
Portrait of smiling practitioner with multi-ethnic senior people...
Summit Vista

How retirement communities help with healthy aging

There are many benefits that retirement communities contribute to healthy aging. Learn more about how it can enhance your life, or the life of your loved ones.
Prosecutor: West Jordan Officer Justified in Fatal Shooting