Idaho prosecutor Jeff Ni for prosecution of Kohaburger case
Jeff Ni, head of Idaho Attorney General’s Criminal Law Division, played an important role in overcoming a defense proposal, which could completely change the case against Brian Kohberger if the judge ruled against the prosecutors.
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Failure was not an option.
With the entire case against Brian Kohberger on the line, an Idaho prosecutor kept stable and helped a judge to convince a judge to allow the controversial DNA evidence to stand up – the FBI despite violating his own policy to achieve it.
Jeff Ni, head of criminal division at the office of Idaho Attorney General, Latah County’s prosecutor Bill Thompson was a legal major gun, because Kohberger’s defense threw the “kitchen sink” strategy in the court – everything was challenging and something would stick.
“Just the way of pure evil is that I will describe it,” said about Kohberger. “I think it was real, especially going to the flyt county, you know, small court room, small town. When I meet in a way in my drain, everything else melts. I forget like external details, but then I sit for my logic and I see it sitting there, and I think of that night, which is against that night, which is against the terrible acts.”
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Brian Kohbergers visit the Monroe County Courthouse in Pennsylvania before the much -awaited extradition hearing. He later convicted the killings of four universities of Idaho students. (Image direct for Fox News Digital)
One of the major contributions of NYE, the defense challenges for evidence of the investigative genetic genealogy (IGG) were overcome – which the FBI first used to tip the investigators to tip the cohberger, which was a controversial step that the defense tried before the test.
“It was important,” NYE told Fox News Digital. “I mean, bets could not be much on that issue.”
State Police and Independent Lab Othram were working on the IGG lead till December 10, 2022, when the FBI stepped and presented the crime scene DNA sample in a commercial genetic database designed to help people track their family history. While technically violates the terms of the bureau’s internal policies and the use of service, the court said that evidence could stand and Kohberger’s arguments could be knocked that IGG technology violated their fourth amendment rights.
NYE had argued that the policy in question “otherwise does not impose any legal limits on valid discovery or prosecution activities.”
On the case, the judge eventually agreed that it was a valid investigation strategy.
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Madison Smiles, the top left, smiles on the shoulders of their best friends, Kaylee Gonclaves, as they pose with two other housewives in Ethan Chapin, Xana Kernodle, and the final Instagram post of Gonclaves, four students were shared a day before death. (@kayleegoncalves/Instagram)
“I struggle with the idea that DNA left at a crime site, that there is no hope of privacy,” Idaho Judge Steven Hippler told Kohberger’s lawyers in January.
The FBI first refused to comment on the issue and instead poo’s news Digital indicated Hippler on the order of February 17, which found that investigators did not violate Kohberger’s constitutional rights and allowed the IGG evidence to remain in playing.
NYE, who argued in favor of evidence for prosecution, told Fox News Digital that it would have been “disastrous” if the Hippler ruled in favor of defense.
Steven Hippler, Judge of the 4th Judicial District of Idaho in Eda County, speaks in court at a hearing. (Catherine Jones/Idaho Statesman/Tribune News Seva Getty Image)
Brian Kohberger called his mother, while the next day returning to the Idaho murder scene, the expert revealed
He said, “It will be disastrous, because it will not be just DNA that goes out, at least the match to Mr. Kohberger. It will be all the fruits from that match. And these are many things,” he told Fox News Digital. “It is all celebrite accessories, because they do not have their equipment to review. This, all their cellphone records, you know, those warrants were issued on the basis of identity made from DNA. So all this has gone. The state would have been put in a very poor position to move forward in this case.”
The IGG argument became the greatest in his career, he said-and it is coming from a Georgetown-educated prosecutor who has argued the murder cases before the Idaho Supreme Court.
Jeff Ni spoke to Bill Thompson at Lata County Courthouse in Moscow on Friday, August 18, 2023 during the hearing of Brian Kohberger. (August Frank/ Leviston Tribune)
“The second thing that bothered me a little, when you are arguing on the fourth modification issues, even if the state loses and the court finds out that there was a violation of the fourth amendment, there are some exceptions to the exclusion rule that the states can sometimes argue …” he said. “In my brief and an oral argument, we did not even claim the exception to the exclusion rule, because there was no one that could apply, and therefore everything was hinged on the argument that it did not violate the fourth amendment.”
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If he failed, the prosecutor could lose reach from the IGG and any evidence or on the basis of it, he said.
He also had decisions outside the state which went in favor of the prosecution, but this was the first time when there was a dispute in Idaho. He was nervous – at least before he stepped before the judge.
Brian Kohberger appears in the ADA County Courthouse for his sentence on Wednesday, July 23, 2025 in Bois, Idaho, to stab four students from Idaho about three years ago. (AP Photo/Kyle Green, Pool)
“Once you go ahead with the court, or at least once I do, that kind of melt, and I can focus on this argument,” he told Fox News Digital.
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The detectives said during a news briefing after Kohberger’s sentence, he was confident that he would still identify the suspect if he had not left DNA at the scene. He had his car, and he said that he must have finally met him.
On November 13, 2022, Kohberger entered an off-kampus house at Idaho University and killed Madison Mogan, 21, Kayley Gonclaves, 21, Xna Karnodal, 20 and Ethan Chapin, 20.
He dropped a bar knife sheath at the crime site near Mojen’s hip. And his DNA on Snap brought the police to the killer in December 2022, officially called the “tip” in the terms of the IGG, the DNA match was confirmed when the police swelled Kohberger’s cheeks to the arrest at their parents’ house in Pennsylvania.
November 13, 2022 Idaho Massacre University’s victims, left to right: Kaylee Gonclaves, Ethan Chapin, Zana Karnodal and Madison Mozen. (Instagram @xanakernodle / @maddiimogen / @kayleegoncalves)
After years of denying the allegations, Kohberger’s defense took a major turn in July. The IGG was removed out before the trial, throwing out or potential death sentence, in the case, in a large part of the NYE work, Kohberger convicted.
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“I wanted to hear him saying this, and he finally did,” NYE said. “By the time of the sentence, I had decided myself, I am doing it with him. I don’t want anything to do with him. I don’t care what he is thinking, I don’t care what he is doing, and so I made a very conscious effort on the punishment, so that he could never pay attention to him, and to focus on the vimas instead.”
The killer, now operated, found four consecutive sentences of life in jail, in which there was no parole-for one of the first-digry murder charges he faced as well as one and 10 years for theft. As part of the argument, he waived his rights to appeal and take a decrease in punishment.
Brian Kohberger is seen in the ADA County Courthouse after being sentenced on Wednesday, July 23, 2025 in Bois, Idaho to kill four students of Idaho about three years ago. (AP Photo/Kyle Green, Pool)
After Idaho AG Raul Labrador Taking charge in 2023, he promoted NYE to run criminal divisions in part as the plan to explain his plan that the department assists them in a major matters from the policy under the pre -administration, which will either take full control of matters or avoid joining all.
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Prior to promotion, he said that he led the special prosecution unit and a ground level approach was what the small jurisdiction was asking when he came to the state for help. It was understood, he said, he wanted to control a case, but he also believes that a community’s ability to provide justice to the killers should not be based on its population and budget.
“I personally feel very strongly firmly that the state should step into these big cases and offer to help,” he said. “And that’s why this happened in this matter.”
In November 2022, a deputy of a latta county at the crime site on Thanksgiving Morning. (Michael Ruke/Fox News Digital)
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NYE, Deputy AG Madison Gorley and former Deputy AG Ingrid son, who is now a member of the Attorney Office of the Prosecution of Canian County, all assisted on behalf of the Attorney General’s office.
Thompson, Latah County Prosecution Advocate, led the case. His senior deputy, Ashley Jennings also played a major role, handling a large -scale search process and more than Kohberger’s Pratial Movement. And former American Attorney Joshua D. Hurvit was commissioned as a special deputy prosecutor, if the case went for a test.