The criminal affidavit pertaining to a former Wyoming police sergeant now accused of triple homicide in South Dakota alleges the man charged into his neighbor’s house and shot three young men to death after leaving home in a rage.
Jay Ostrem, 64, was a Gillette Police Department agent from 1982-2003 and retired at the rank of sergeant, Jennifer Toscana, Gillette City spokeswoman, confirmed Thursday.
He’s facing three first-degree murder charges in South Dakota, in what court documents describe as an attack on three young adult male neighbors, after Ostrem heard that one of them had made an unwanted sexual advance on his wife.
Ostrem had his first court appearance Wednesday, Dakota News Now reported.
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The three victims included a 26-year-old man who’d allegedly rubbed his genitalia against Ostrem’s wife while the pair were drinking together – as Ostrem slept – in Ostrem’s home four days before the attack, according to an evidentiary affidavit filed in Turner County, South Dakota on Tuesday and sent to Cowboy State Daily on Thursday.
The other two victims included a 21-year-old man who was the first decedent’s brother, and a 35-year-old man who had a different last name from the two brothers, the affidavit says.
Neighbor Man
The wife reported to South Dakota Division of Criminal Investigation agents that the 26-year-old man was a neighbor, and that he had been over at her home while Ostrem was there sleeping on May 23.
She said the man forcibly kissed her, exposed himself to her and rubbed his genitalia against her against her wishes, the affidavit says.
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When she told Ostrem about these incidents four days later, Monday, he “got up and went raging out of the house,” says the document. The wife reportedly didn’t know where he was going or if he was armed when he left. She stayed home until law enforcement arrived, she said.
The Call
The 21-year-old called 911 dispatch at about 9:44 Monday night, frantic, saying a shooting was happening at the home across from Ostrem’s, reportedly. The affidavit says the man told dispatch that his brother had been shot and killed with a shotgun.
The shooter was “a guy from across the street,” the affidavit says. The caller then said the shooter had gone back to his own home; but after some time on the phone with the dispatcher, the young man said that he, too, had been shot, reportedly.
Then the man “stopped communicating with the dispatcher,” the document says.
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Shotgun Shells
A Game Fish and Parks Conservation officer responded to the home where the shooting happened, and called for backup. There he met Ostrem exiting the home through the attached garage, allegedly.
The conservation officer ordered Ostrem to stop, but Ostrem kept walking down the street. So the officer drove his vehicle that way and contacted Ostrem again near an intersection, and ordered him to get on the ground.
Ostrem complied, and let the officer know he had a gun in his pocket, the document says. An AR-style rifle allegedly lay on the ground near Ostrem. His left hand was bleeding and he reeked of alcohol, the officer reportedly observed.
Agents discovered Ostrem had a .380 handgun in his pants pocket and also had spent shotgun shell casings and at least one spent rifle casing, the affidavit says.
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He was arrested.
Into The Home
Investigators entered the home where the shooting had happened and found three deceased men with apparent gunshot wounds, reportedly. They noted that Ostrem’s home is just across the street.
Use Of Force Incident
Ostrem was involved in a lethal use-of-force incident 23 years ago in Gillette, according to civil court documents, but a federal lawsuit leveled against him over it was dismissed Aug. 18, 2004. Then-U.S. District Court Judge Clarence A. Brimmer noted the use of force officers used in that incident was not found to be unreasonable.
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In the early-morning hours of Nov. 3, 2001, a woman left her home to get away from her husband, Michael Owens, with whom she’d been fighting in their Gillette home, according to a civil lawsuit complaint filed in the U.S. District Court for Wyoming in 2003.
The woman’s sister reported Michael Owens to police, saying Owens was “just trying to kill her,” court documents say.
Dispatch asked Owens’ wife if Owens had a gun and she answered “yes.”
Ostrem and other Gillette police agents responded, found Owens to be driving, and followed Owens to his home. Brimmer’s order dismissing this case called it a “chase.”
One officer videotaped the events. The judge’s order says the tape “clearly reveals” the following sequence of events:
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Officers ordered Owens to show his hands, as the man parked in his own driveway and rammed his pickup into the back of his garage.
Owens smashed into one of the agent’s patrol cars, then hit his garage again; then crashed into a boat seconds after one of the officers took cover behind it.
Owens then sped in reverse across the street and rammed the front door of a neighbor’s house.
Two officers (not Ostrem) were concerned for the neighbors’ safety and decided to use lethal force to stop Owens, but since they didn’t know where in the house the neighbors were, they didn’t fire.
Owens pulled forward and crashed into another car “in an apparent attempt” to hit one of the officers on scene. That officer was later found to be severely injured; he had to have two cervical discs fused, the judge’s order notes.
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Then-Sgt. Ostrem saw all this and believed the officers’ lives were in danger. He ran alongside Owens’ pickup while drawing his gun; shouted commands at Owens; watched as the pickup rammed the back of the garage, and hoped Owens had knocked himself out, the order recounts.
But Owens kept driving, trying to back up again.
Ostrem emptied his entire pistol, even as Owens tried to get the truck into reverse. Owens started driving in reverse, and another officer opened fire, killing Owens.
“Our system of justice… does not deal in either sympathy or suspicion; it is built on proof,” wrote Brimmer when dismissing the case. “When the officers were threatened by Owens’ vehicle, a deadly weapon, the officers were permitted to use deadly force.”
What A Shock
Former Gillette Police Department Chief Ric Paul, who supervised Ostrem during their shared tenure, told Cowboy State Daily on Thursday that the news of Ostrem’s homicide case shocked him.
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“You just can’t understand why a guy of his magnitude would do something he apparently did,” said Paul, who described Ostrem as a solid, intelligent police officer.
Though Ostrem had potentially traumatic incidents on the job, Paul said he’d insisted on Ostrem having any issues from those addressed and tracked.
“And Jay was part of those (issue briefings for the critical incidents) he was involved in,” he said.
Clair McFarland can be reached at clair@cowboystatedaily.com.
CASPER, Wyo. — Two Wyoming residents died and a third was injured in Arapahoe, Wyoming, on Friday after their vehicle went airborne and struck a pole, according to the Wyoming Highway Patrol.
The crash was reported around 10:39 p.m. May 8 near Goes In Lodge and Mission roads south of Riverton. According to the WHP’s investigation, the Dodge passenger vehicle was driving at a high speed north on Mission Road and failed to make a left-hand curve, driving off the road.
“The Dodge drove up the roadway embankment toward Goes In Lodge Rd and vaulted approximately 154 feet,” the WHP said. The Dodge rolled end-over-end about three times, struck a utility pole while airborne and came to rest on its wheels, where it caught fire.
23-year-old Wyoming residents Kalvin Yellowbear and Rosario Lopez were killed in the crash. Another passenger was injured. No seat belt use was indicated for the deceased.
Speed and other factors are under consideration by investigators, the report said.
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There have been 40 highway fatalities so far in 2026, the WHP said, compared to previous years to-date:
34 in 2025
27 in 2024
46 in 2023
This story contains preliminary information as provided by the Wyoming Highway Patrol via the Wyoming Department of Transportation Fatal Crash Summary map. The information may be subject to change.
County 17 publishes letters, cartoons and opinions as a public service. The content does not necessarily reflect the opinions of County 17 or its employees. Letters to the editor can be submitted by emailing editor@oilcity.news.
Dear Gillette,
I am writing this letter because I am fed up with being forced to make impossible decisions just to live and work in Gillette.
We are constantly told that Campbell County is a great place to build a life, but the reality on the ground is exhausting. We are facing a double penalty here: a dwindling, high-cost economy and an almost non-existent dating scene. I am tired of having to choose between paying outrageous rent for a basic apartment or moving away from friends and community because I cannot find a genuine, long-term partner.
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The dating pool in Gillette feels more like a shallow puddle. Many of us are doing everything right — working hard, staying stable — yet we are coming up empty-handed due to limited public social spaces and transient culture that isn’t conducive to long-term relationships.
It is disheartening to see the “Wyoming Advantage” disappear while we are stuck in a dating desert. Rising costs and limited supply make housing a heavy burden, with residents struggling to find affordable options. Skyrocketing fuel, utility and grocery prices have put families under extreme financial pressure.
I am tired of sacrificing my personal happiness and financial stability to live here.
We need more than just industrial growth; we need quality of life that allows us to find love and build a future here, not just by a paycheck.
Kevin McNutt Gillette
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Rich Renner always knew he had pretty good neighbors, but he found out just how good when his new rescue dog from California got himself lost in a Wyoming whiteout.
Renner had taken the goldendoodle named Charlie out ahead of this past week’s storm to relieve himself. There was some snow on the ground at the time, but Charlie wasn’t having a thing to do with that strange, cold, white stuff on the ground.
At least not at first.
“I had taken him out to the barn, but he was staying under the overhang,” Renner said. “He wouldn’t go out to the snow.”
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Given the dog’s reluctance, Renner decided to shovel a path from the barn to the house to make it a little easier for the pooch to get around.
While Renner was doing that, the dog finally decided maybe the snow wasn’t so bad after all.
“He kind of got the zoomies,” Renner said. “So, he was running around and went around the corner, out of sight. I had boots on, so I followed after him.”
By the time Renner turned the corner, there was no sign of Charlie.
A dog named Charlie a Wyoming couple rescued from a California shelter running off with a whiteout blizzard on the way triggered a 24-hour search. It was a miracle, Charlie’s owners believe, that a newlywed couple in the middle of nowhere found him. (Courtesy Rich and Barb Renner)
A California Dog Meets His First Wyoming Whiteout
At first, Renner wasn’t too concerned. It wasn’t the first time the dog had done a little bit of exploring around the house.
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Normally, he came back on his own.
But this time was different. There was a huge snowstorm expected later in the day, and the forecast was for temperatures in the range of 25 degrees.
Charlie is a rescue dog fresh from California, which means the goldendoodle didn’t have much in the way of fat stored in his body. Nor was he yet acclimated to the cold.
Renner followed his dog’s tracks down to a forested edge, and there saw what had captured Charlie’s attention.
“There were deer tracks all over,” Renner said. “Boom, he was gone.”
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Renner was at first more worried about the deer than the dog.
He’d just put an AirTag on the dog’s newly arrived collar right before they went outside that morning. The collar also had the couple’s names and phone numbers.
“An hour later, that AirTag pinged at a neighbor’s house about a half mile away,” Renner said. “So I zoomed down there on a four-wheeler and I saw tracks, but no Charlie.”
Renner roamed around on his four-wheeler for about an hour, looking for and calling for Charlie. Then he had to go to work.
“My wife, Barb, stayed home all day and worked off and on and looked for him some, too,” he said.
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A dog named Charlie a Wyoming couple rescued from a California shelter running off with a whiteout blizzard on the way triggered a 24-hour search. It was a miracle, Charlie’s owners believe, that a newlywed couple in the middle of nowhere found him. (Courtesy Rich and Barb Renner)
A Long, Cold Night
Once Renner returned home, he and his wife did more searching until about 10:15 p.m. that night using a headlamp to see.
“I thought I’d see his eyes somewhere with that headlamp,” Renner said. “But to no avail.”
By this time, a sick feeling was growing in the pit of his stomach.
He was thinking about how the dog had chased after an animal three times his own size and how sometimes deer had charged, unafraid, at the couple’s older husky.
Maybe Charlie had been hurt. And Wyoming’s famous winter winds were picking up.
Was his California pooch stuck somewhere outside in this Wyoming whiteout, where the temperature was just getting colder and colder?
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“It had snowed all day,” Renner said. “It was just a lot of snow.”
That snow covered the dog’s tracks, making him impossible to track.
The AirTag was proving next to useless as well, suggesting the dog had gone somewhere very rugged, some place with little to no data to transmit a signal.
Tuesday night, Renner could barely sleep thinking about Charlie, lost in this heavy snowstorm, with temperatures forecast to get into the lower 20s that night.
“Since we didn’t find him, I’m thinking, ‘Oh my God, he’s not going to survive the night,’” Renner said. “I kept waking up a lot and thinking about him. Like, ‘Oh my gosh, what’s he experiencing right now? Where’s he at? Did a mountain lion get him?’”
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The next day, Renner and his wife were both exhausted but had not lost hope they would yet find Charlie.
They were looking, their neighbors were all looking. They even hired a drone company to come look for Charlie using an infrared camera.
A dog named Charlie a Wyoming couple rescued from a California shelter running off with a whiteout blizzard on the way triggered a 24-hour search. It was a miracle, Charlie’s owners believe, that a newlywed couple in the middle of nowhere found him. (Courtesy Rich and Barb Renner)
Neighbors Rally As Storm Deepens
The Renners had been putting messages out on Facebook and social media about Charlie, asking for the community’s help to find him.
Renner was amazed at how his neighborhood sprang into action.
It seemed that everyone he knew — and even some people he didn’t know yet — were looking for his pet, who he feared was too skinny to survive another night out in the cold, much less the cold, wet snowstorm that continued into Wednesday.
“Before, I lived in Cheyenne for a lot of years, and you didn’t even hardly know your neighbors,” he said. “You maybe said ‘hi,’ to them when there’s a snowstorm and you’re shoveling your snow at the same time.
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“But other than that, we didn’t even know our neighbors.”
Mountain Meadows, though, proved to be a different kind of friendly — the kind that doesn’t smile and wave in passing; the kind that shows up on the doorstep and asks, “How can I help?”
“There were probably six different vehicles or side by sides at different times looking for him Tuesday night,” Renner said. “And then people were passing the word on through Facebook and emails and everything.
“And just everyone was praying for him. I mean the number of prayers that went up for Charlie is just amazing.”
A Blind Date, A Snowy Hike, And A Lost Dog
While a small army of neighbors continued to search for Charlie with drones and side-by-sides, a newlywed couple the Renners had never met were on a surprise date.
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Jada, a Laramie native, and Collin Szymanski, from Utah, are newlyweds.
Since Collin is new to Wyoming, Jada has been making a point of showing him some of her favorite places.
That day, she’d decided on a literal blind date, complete with blindfold, to one of her favorite places in Curt Gowdy State Park — Hidden Falls.
The falls are a couple miles from where the Renners live as the crow flies, and maybe 10 miles or more away in twisting, winding, dog-chasing-a-deer miles.
By the time Jada and her husband arrived at the Hidden Falls Trail, snow was picking up speed and Jada was starting to question the idea of hiking that afternoon.
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“There was, like, snow everywhere,” Jada said. “I was like, ‘Oh man, I thought it was going to be a little less snow than this.’
“So I unblindfolded him and I was like, ‘Should we still go?’”
The couple are young and in love, so of course the answer to that question was, “Yes!”
As they hiked into the thick carpet of new snow, they soon found themselves with a new-but-stand-offish friend.
“All of a sudden we see this little dog running around,” Jada said. “We’re thinking, ‘Oh well, his owners must have decided to go on a hike in the snow, too.’”
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A dog named Charlie a Wyoming couple rescued from a California shelter running off with a whiteout blizzard on the way triggered a 24-hour search. It was a miracle, Charlie’s owners believe, that a newlywed couple in the middle of nowhere found him. (Courtesy Rich and Barb Renner)
The Sound Of Loneliness
When they got to the end of the trail, though, there were no owners around.
That was when Charlie began to howl, a haunting, lost sound.
“You could tell he was so sad,” Jada said. “So we were trying to get to him, but he was a little scared of us.”
Once Jada managed to get close enough to see Charlie’s collar, things changed. The second she said his name, the dog immediately calmed down and came over to them.
It was remarkable, given that Charlie had only had that name for about four weeks. But it clearly meant everything to the dog to hear that one word.
These were friends, Charlie decided, because somehow they knew his name.
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An Answer To A Prayer
By noon, with no further sight or sign of Charlie, the Renners’ hopes were dwindling.
Their property backs up to some very rugged country with deep draws and thick timber. It’s a maze of places to get lost.
It’s also a maze full of obstacles and dangers much larger than Charlie — mountain lions, deer, moose. Then there are box canyons easier to get into than out.
Their skinny California dog, chasing a deer in a full Wyoming whiteout, could easily become lost, trapped, or hurt. More and more, it seemed like that’s what had happened.
Just as they were about to give up and call it a day, Renner got a phone call from a man he didn’t know.
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“Hey, are you guys missing a dog?” the man asked.
Relief flooded through Renner at those words as the man told him he’d just found a golden-colored dog at Hidden Falls in the box canyon.
Thanks to the collar, which had the Renners’ number on it, he’d been able to immediately call from the canyon.
“I couldn’t believe it,” Renner said, noting that calls from the canyon are usually impossible to make.
It felt like a minor miracle.
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Charlie had spent all day and night Tuesday in a snowstorm that got down to about 25 degrees, and had somehow managed to bump into what were the only other hikers on the Hidden Falls Trail, somehow none the worse for his adventures.
Soon, Renner and his wife were headed in their cars to go pick up Charlie from the Szymanskis, meeting halfway between their home and Hidden Falls.
For Rich, who describes himself as a person of faith, all these details add up to something bigger than coincidence.
“I know that God makes things happen,” he said.
Jada felt that as well, considering how things happened.
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“Their whole neighborhood had been looking for him,” she said. “He told us he had just been praying so hard. We felt like we got to be the answers to those prayers.”
A dog named Charlie a Wyoming couple rescued from a California shelter running off with a whiteout blizzard on the way triggered a 24-hour search. It was a miracle, Charlie’s owners believe, that a newlywed couple in the middle of nowhere found him. (Courtesy Rich and Barb Renner)
Celebrity Life On A Leash
Back home, Charlie acts as if nothing miraculous has happened at all.
“He’s happy to be home for sure,” Renner said. “He spent yesterday in the barn, and he’s in the barn today.”
But he’s not going outside any more for a while without a leash, Renner said, as he remains just a little too fascinated with Wyoming wildlife, particularly moose, which are 100 times heavier than he is.
Renner is looking into electric fences to keep Charlie and his moxie corralled so that the pooch’s future adventures won’t be quite so harrowing.
“We’re chuckling now, because he’s like a celebrity,” Renner said.
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For all the worry and all the searching, what’s really sticking with the Renners is how his Wyoming neighbors were there when needed, crawling the snowy hills in their trucks and side-by-sides, looking for a California pooch with no idea what a Wyoming whiteout really means.
“That’s the real story,” Renner said. “It’s the community, the neighborhood, how everyone just rallied behind this to help.”
Renée Jean can be reached at renee@cowboystatedaily.com.