CRIME, POLICE + COURTS

Riverton sergeant found ‘legally justified’ in July 4 shooting, killing of armed man

Apr 18, 2025, 2:30 PM

riverton Police body camera video released Friday shows Ryan Patrick Ludeman, 44, holding a knife i...

Police body camera video released Friday shows Ryan Patrick Ludeman, 44, holding a knife in his right hand. The sergeant was found Friday to be legally justified in shooting and killing Ludeman. (Pat Reavy/KSL.com )

(Pat Reavy/KSL.com )

RIVERTON — A Riverton police sergeant was legally justified in shooting and killing a hit-and-run suspect armed with a knife following a Fourth of July fireworks show in Riverton last year, Salt Lake County District Attorney Sim Gill announced Friday.

About 11:20 p.m. on that day, Ryan Patrick Ludeman, 44, was driving a 2016 Arctic Cat Wildcat side-by-side vehicle when he was involved in a hit-and-run crash near 1300 West and 12800 South. Ludeman was located and pulled over a short time later by police. He denied having anything to drink and refused field sobriety tests, according to the final report released Friday by Gill.

Just before midnight, Ludeman again refused to do a sobriety test. Riverton Police Sgt. E.J. Estrada told Ludeman he wanted to do the tests to make sure he was good to drive.

“Nope,” Ludeman told him.

In body camera video released Friday, Estrada then kneels down to talk to Ludeman, who is sitting on the curb with his hands clasped together in front of him. At that point, Estrada detects an odor of alcohol on Ludeman’s breath and tells him he smells like alcohol, the report states.

“Sure,” Ludeman responded.

It’s then that Estrada decides to take Ludeman into custody and tells him to stand up. Ludeman disobeys his commands. In body camera videos, Estrada and a second officer bend down to grab ahold of Ludeman to get him to stand up. Estrada grabs Ludeman’s left wrist. As he pulls the left hand away from his body, Estrada sees a knife in Ludeman’s right hand and hears the clicking sound of the knife being opened.

The second officer who was present during the confrontation said Estrada immediately yelled multiple times, “He’s got a knife.”

“A brief and dynamic struggle ensued during which Sgt. Estrada drew his handgun and fired at Mr. Ludeman three times,” the report states.

“It happened really fast,” the second officer continued. “(Estrada) was standing, and (Ludeman) was kind of on his knees, from what I remember. Almost like if you’re wrestling, you’re going to take out somebody’s knees.

“It seemed like (Estrada) was trying to back off and went to gun, and fired at him, and then he just dropped right there,” the officer said.

“Review of body-worn camera recordings indicate that Sgt. Estrada fired his weapon about five seconds after he began asking Mr. Ludeman to put his hands behind his back,” according to the report.

An autopsy determined Ludeman was shot in the head and twice in the neck. His blood-alcohol level was measured at 0.143% and amphetamines were also found in his system, the report states.

Estrada declined to be interviewed for the investigation. But in police body camera video reviewed by the district attorney’s office, Estrada tells another officer shortly after the shooting, “He pulled the knife on me when I went to (arrest him).”

Based on the totality of the situation, Gill said Friday it wasn’t unreasonable for Estrada to believe his life and the life of his partner were in danger.

“They’ve got their hands on him when that right hand comes up and the blade clicks open. At that moment … he could have stabbed Estrada right there because he’s like less than a foot-and-a-half, 2 feet from the blade. He’s right on top of him,” Gill said.

In reviewing the officers’ body camera videos, Gill said Ludeman is seen reaching into his back pocket and grabbing his knife as he’s walking toward the curb to sit down, something the officers apparently didn’t see. But Gill also notes that at no time did Ludeman tell the officers that he had a knife in his hand as they were talking to him.

“He does not tell anyone that he has the knife. And then he makes the conscious choice to open the knife,” the district attorney said. “It is not unreasonable with the totality of that to infer that at that point, from my perspective, that he’s flipped that knife open and he’s done it with one purpose and one purpose only — because he plans on using it on the officers. And people can disagree with that, but in the totality of all the sequences that we have, that is the conclusion that we’re left with.”

We want to hear from you.

Have a story idea or tip? Send it to the KSL NewsRadio team here.

Crime, Police + Courts

Sohail is shown in a hospital after he sustained critical injuries in a stabbing in West Valley Cit...

Pat Reavy, KSL

Valley Fair Mall stabbing incident charged as hate crime

A Taylorsville man accused of stabbing another man multiple times at Valley Fair Mall, allegedly because of his faith, has been charged with two counts of attempted murder.

4 days ago

A vehicle believed to have been involved in a shooting in West Point on May 30. Davis County announ...

Cassidy Wixom, KSL

Second person arrested in connection with West Point homicide investigation

Davis County announced the arrest of a second person involved in a West Point porch shooting in May that led to the death of a veteran.

5 days ago

Andrea Renee Shaw, accused of murdering her twin toddlers, during a hearing at the Payette County C...

Nate Eaton, EastIdahoNews.com

Judge revokes bond for Idaho mom as her attorney argues vaccines, not murder, killed twins

A judge revoked bond Tuesday afternoon for an Idaho mother accused of murdering her twin toddlers despite her claims the children died from routine vaccinations.

6 days ago

The Support Voices of Survivors office is pictured on Tuesday. Domestic violence advocates in Utah ...

Annette Campbell, KSL

Utah domestic violence advocates see summer increase in calls

Advocates for victims of domestic violence said summer often brings an increase in calls for help, with more survivors reaching out for services during school breaks and warmer months.

7 days ago

A man was arrested in Utah County for allegedly holding a woman against her will and subjecting her...

Pat Reavy, KSL

Dog collar, zip ties found at camp where woman was allegedly held captive, abused

A homeless man who police say held a woman against her will has been arrested for investigation of nearly three dozen charges.

7 days ago

A 14-year-old boy has been charged with murder in juvenile court in Tooele County in the death of a...

Pat Reavy, KSL

14-year-old boy charged with murder in Tooele County

A 14-year-old boy taken into custody in Tooele County after a 66-year-old man was found deceased has been charged with murder.

7 days ago

Sponsored Articles

...

Bear Lake

Road trip ready: How Bear Lake became the go-to destination for Western U.S. travelers

Whether you are chasing pristine beaches, fresh raspberry shakes, or endless water sports, this sponsored guide—brought to you in partnership with Bear Lake —uncovers everything you need to plan the ultimate getaway.   There’s nothing quite like the thrill of hopping in the car with your favorite snacks in tow and heading out for a […]

...

Harper Clinic

A new standard of care: How Harper Clinic’s IOP is changing the face of mental health treatment in Utah

This article is sponsored by Harper Clinic, a Utah-based clinic offering FDA-approved TMS therapy for treatment-resistant depression.    Utah’s mental health crisis is leaving many residents caught in an uncomfortable middle ground: struggling too much for weekly therapy alone, but unable to step away from work, parenting or daily life for inpatient treatment. As demand […]

...

Harper Clinic

Breaking free from depression: How Harper Clinic’s TMS Therapy can help

This article is sponsored by Harper Clinic, a Utah-based clinic offering FDA-approved TMS therapy for treatment-resistant depression.    The weight of depression is real. Many people spend years fighting it, adjusting medications, managing side effects and wondering if this is simply how life is going to feel.   According to the World Health Organization, depression affects […]

mental health...

Andrew Adams, KSL

Library discussions bring men’s mental health to the surface

Therapists say it’s common for men to repress things like trauma, grief, stress and anxiety. Now, a new weekly series of discussions aims to help men bring it all to the surface.

...

Bear Lake Convention & Visitors Bureau

Cozy up in Bear Lake: Discover the magic of a winter getaway

SALT LAKE CITY – The holiday season shines brightest when time slows down and loved ones gather. Gifts, decorations and festive music come and go, but shared experiences tend to last much longer. Research supports that idea. Dr. Theresa E. DiDonato told Psychology Today that vacations can strengthen relationships by creating meaningful time away from daily […]

...

Harper Clinic

Rewriting the path to healing: Inside Harper Clinic’s whole-person mental health model

OREM — A few decades ago, you’d have had a hard time finding a doctor to treat both your mind and body; And a century ago, you’d have been hard-pressed to find a doctor to treat your mind at all. Today, medical professionals are understanding more and more the undeniable connection between the body and […]

Riverton sergeant found ‘legally justified’ in July 4 shooting, killing of armed man