Friends Say Kohberger Became 'Aggressive' in School

Bryan Kohberger's behavior changed in high school, according to the father of the murder suspect's childhood friends.

Tom Arntz told KXLY-TV that his son and daughter grew up with Kohberger and went to school with him in Pennsylvania.

"Quite a few times, Kohberger was actually in my house," he said. "It's a pretty frightening thing to know."

Arntz said some things were "a little odd" with Kohberger.

"He had to be the number one person in the room," he said.

As the years went on, Arntz said he kids noticed changes in Kohberger after a significant weight loss.

"My son said he changed a little bit. He got pretty aggressive with him and mean a little bit," Arntz said. "My son broke off relations with him. He just never seen him anymore."

Arntz said the family last saw Kohberger when he was working as a security guard.

"When we talked to him there, everything seemed normal," he said. "He was polite and everything. It was very weird to hear this stuff."

He adds that Kohberger was very smart.

"He would explain things in a really odd way that had to be a really sophisticated way of explaining stuff," Arntz said.

Friends Say Kohberger Used Heroin, Was Bullied in School

Bryan Kohberger's high school friends describe how the murder suspect went from bullied to bully after a significant weight loss his senior year.

A women named Bree, who asked to keep her last nameconfidential, told 48 Hours that Kohberger was overweight and bullied a lot in high school, until he lost about 100 pounds his senior year.

"He was rail thin," Casey Arntz, another friend, said. "It was after that weight loss that a lot of people noticed a huge switch."

Arntz also said Kohberger bullied her brother.

"When Bryan [Kohberger] would get kinda angry with him, he would gaslight him and get physically aggressive," she said, adding that Kohberger would put her brother in chokeholds.

Bree then claims Bryan started using heroin.

"You just saw him becoming more self-destructive," she said. "He really stayed secluded."

After graduating high school, Kohberger attended Pennsylvania's Northampton Community College and worked security for the Pleasant Valley School District.

"He was telling me that he wanted to get sober, that he was getting sober," Bree said. "And he wanted to let me know, 'I'm gonna do better. I'm gonna be better.'"

Arntz last saw Kohberger in 2017 at a friend's wedding.

"I gave him a hug and I said, 'You look so good. I'm so proud of you.'"

Kohberger was focused on his criminology studies to help others, Bree said.

"His goal was just to change the world for the good around him. He wanted to do something that impacted people in a good way," she said. "People were not his strong suit. And I think through his criminology studies, he was really trying to understand humans and trying and understand himself."

Benjamin Roberts was in four classes with Kohberger at Washington State University. He told 48 Hours correspondent Peter Van Sant that Kohberger "seemed comfortable around other people."

"He was very quick to offer his opinion and thoughts," he said, describing Kohberger as highly intelligent.

"He would describe things in the most complicated, perhaps academic way possible," Roberts added. "It was like he was trying to convince people that he knew what he was talking about."

Kohberger Changed License Plate Days After Murders

Bryan Kohberger reportedly changed his license plate days after his car was spotted near the crime scene, according to newly released court documents.

Investigators said Kohberger drove his 2015 Hyundai Elantra from his home in Pullman, Washington to Moscow, Idaho on Nov. 13, the day four University of Idaho students were murdered, the arrest affidavit states.

Moscow police put out an alert on this car model to local law enforcement on Nov. 25, amid the murder investigation.

He had a Pennsylvania license plate with the number LFZ-8649 before the murders. This plate was set to expire on Nov. 30, according to the affidavit.

Before the killings, Kohberger was pulled over twice, once in Moscow on Aug. 21 and once at Washington State University, where he was a Ph.D. student, on Oct. 14.

Four days after Moscow police sent out that alert, a WSU police officer found Kohberger's car while looking for white Elantras registered at the school.

Just five days after the murders, Kohberger registered his car in Washington and on Dec. 5 he put a new Washington State license plate CFB-8708 on his car, according to Washington State Department of Licensing records.

This was the license plate on the car when Kohberger will pulled over in Indiana and captured by a license plate reader in Loma, Colorado on Dec. 13 on his way to Pennsylvania, the affidavit states.

Kaylee's Father Says Killer Was 'Hunting' Her

The father of one of the University of Idaho murder victims said he believes his daughter's killer was "hunting" the victims.

"Nobody understands exactly why, but he was stalking them, he was hunting them," Steve Goncalves, father of Kaylee Goncalves, told CNN. "He was a person looking for an opportunity and it just happened to be in that house. And that's hard to take."

Goncalves called the killer a "coward" for attacking the four victims while they slept.

"She had her phone right next to her and she couldn't call 911," he said. "So these were just girls that went to sleep that night and a coward, you know, a hunter that went out and he picked his little opponent that was girls, that's probably why the house was targeted."

Goncalves was also present during murder suspect Bryan Kohberger's initial Idaho court appearance Thursday.

"He knows I want him to look me in the eye," he said. "So he didn't. He didn't give me that opportunity. He's scared to look at me in the eyes and start to understand what's about to happen to him. You know, he picked the wrong family."

Suspect Cleaned Car, Emptied Trash Before Arrest

Bryan Kohberger was seen thoroughly cleaning his car and wearing surgical gloves multiple times before he was arrested last week, according to law enforcement.

An official told CNN that the murder suspect "cleaned his car, inside and outside, not missing an inch."

This information came from four days of police surveillance leading up to Kohberger's apprehension at his parents' home in Pennsylvania on Dec. 30.

Kohberger was also seen outside of the home several times wearing surgical gloves and putting trash bags into a neighbor's trash bins at around 4 a.m.

Authorities recovered some of the Kohberger's garbage from the trash bins and sent it to an Idaho State Lab for DNA testing, the source said. This information was confirmed in the probable cause affidavit that officials released Thursday.

Kohenberger Wanted To Be Army Ranger, School Records Show

The affidavit stated that investigators were able to obtain the educational records of Bryan Kohberger.

They showed that in his past studies he wrote an essay when he applied for an internship with the Pullman Police Department in the fall of 2022.

According to the affidavit, Kohberger's essay included his interests on assisting local law enforcement agencies in collecting and analyzing technological data.

In addition to this, at one point Kohberger aspired to be an Army Ranger, according to a Fox News report.

He is also featured in his high school yearbook in a law enforcement class with other students exercising.

The picture showed Kohberger in uniform with an insignia on his right sleeve showing a U.S. flag as a badge dangles from his left pocket.

The photo caption for the picture in the 2011 Pleasant Valley High school yearbook read: "Sophomore Bryan [Kohberger] performs his daily push-ups as part of his law enforcement class.

"Kohenberger used the skills he learned to help him reach his goal to one day serve in the Army Rangers."

The Army Rangers soldiers are combat experts responsible for high stake missions in enemy territory, according to its website.

It goes on to add: "Becoming a Ranger is an honor shared by a distinct few.

"You'll specialize in conducting raids and assault missions deep inside enemy territory- a task only the best-trained can carry out in this branch of the elite Special Operations Forces."

Biggest Bombshells From the Affidavit

The affidavit revealed a slew of information relating to the case and has helped fill in some of the missing details surrounding the investigation.

According to the document one of the surviving roommates may have seen the murderer and detailed what she saw to police.

Dylan Mortensen said that at around 4 a.m. she heard crying and eventually opened her door to see a figure clad in black clothing and a mask that covered their mouth and nose.

The affidavit said that "the male walked past Mortensen as she stood in a 'frozen shock phase'. The male walked towards the back sliding glass door."

It also revealed that police found DNA on a knife sheath found at the scene of the crime.

Following this recovery, investigators recovered garbage from Kohberger's parent's home in an effort to build a DNA profile.

No Way of Knowing Motive Unless Suspect Talks: Former Detective

Retired detective and cold case expert Kenneth Mains has told Newsweek that the motive for the crime allegedly committed by Kohberger will not be revealed unless he talks.

"We, as the so-called experts, can theorize all we want," Mains, who is also the founder of the American Investigate Society of Cold Cases (AISOCC) said.

"Yet, the fact remains, unless Bryan Kohberger himself tells us, or something is found on his computer or in writings from him, we will all just be speculating."

Mains, who is not involved in the investigation or case, added: "We who study criminology and human behavior have been doing this for centuries because we want to know why. Yet, the fact will always remain each individual is different in behavior and thought process."

Parents of Kaylee Goncalves Call For Death Penalty

The parents of victim Kaylee Goncalves, Steve and Kristi Goncalves, spoke to NewsNation on Thursday about the latest developments.

While speaking to host Ashleigh Banfield, the pair said they would one day forgive Kohberger for his alleged crimes, but that would come after his death.

Steve Goncalves also spoke about what justice would look like for the family and said that they supported the death penalty for the accused.

He said: "Justice doesn't have a room where you can read books and you can go to school and you can have three meals and your vegan diet. To me that is not justice.

"Justice is when you leave the planet and the whole world is able to rejoice and be glad that you are not there. That is justice.

"We will forgive this individual and we will, but he has to pay for what he's done.

"And it's not just our daughter, it's all the victims he needs to pay justice to.

Speaking specifically about the death penalty, he added: "If you want to play God's role, you're gonna have to go answer to him."

Read Bryan Kohberger Affidavit In Full

The affidavit in the case of the University of Idaho killings was released yesterday, with fresh details about how police linked suspect Bryan Kohberger to the incident, and how they tracked him down in the weeks following.

You can read the full affidavit here.

The 19 page document is being poured over by media and internet sleuths alike, all keen to find out more information on the crime which has captured the attention of Americans for weeks.