Bryan Kohberger told authorities investigating the quadruple homicide at the University of Idaho that he was familiar with the disturbing case because he had received an alert about it from Washington State University, where he was studying for a Ph.D. in criminology.

Idaho State Police conducted its first interview with Kohberger on Dec. 29, 2022, after his arrest while he was with his family in Pennsylvania.

He and the investigators initially made small talk about WSU and how he "loved being in school" before the conversation turned to the quadruple murders, according to documents released by the Moscow Police Department Wednesday.

When asked if he had heard about the slayings, the killer responded, "Of course," because he had received an alert about them from WSU, which is less than 10 miles from the U of I.

The detective asked Kohberger if he "wanted to talk about that," to which the monster replied, "Well, I think I would need a lawyer," the docs show.

The interview concluded when Kohberger invoked his Fifth Amendment and asked for an attorney, per the docs.

Dylan Mortenson, one of two surviving roommates, told a friend that she didn't call 911 despite seeing a masked man in the Idaho murder house because "she was intoxicated and didn't want to believe what was going on," court filings said.

Mortenson called the pal just before noon on Nov. 13, 2022, to tell her "last night around four a.m. she heard and saw a man" and that she wanted the friend to come over to "check the house because she was too scared," the filings said.

The friend divulged these details to cops the morning the bodies of Kaylee Goncalves, Xana Kernodle, Ethan Chapin and Madison Mogen were found.

It was previously revealed that Mortenson and Bethany Funke, who also survived the bloodbath, texted shortly before 4:30 a.m. Mortenson at one point fled to Funke's room, where they locked themselves in for the rest of the night.

A teaching assistant who worked alongside Bryan Kohberger at Washington State University observed injuries that looked like "scratches from fingernails" on his face around the time of the grisly quadruple homicide.

The man, who considered himself a friend of the convicted killer, noticed the injuries on two separate occasions in October and November 2022, according to documents released by the Moscow Police Department on Wednesday.

The marks were on Kohberger's face and hands. The TA told authorities he specifically noticed one long scratch down Kohberger's face, according to the documents.

Kohberger simply asserted that he'd "been in a car accident" and tried to brush off his friend's concern, even as his behavior grew more erratic.

Around the time of the homicides, Kohberger frequently dropped by the teaching assistant's dorm, often behaving like "someone who wanted to vent," according to the documents.

He would also frequently discuss his area of study, which focused on criminal decision-making and burglary-type crimes, according to the documents.

The TA noted that he tried to warn Kohberger away from inappropriate behavior with female students after the killer started to leverage his position. He would also often shirk his duties, leaving it to the teaching assistant to finish, according to the documents.

Kaylee Goncalves' Goldendoodle, Murphy, was found in the Idaho murder house when cops arrived -- uninjured but "scared," detectives wrote in the newly unsealed court documents.

The dog, which the slain victim shared with her ex-boyfriend, was found on Kaylee's bed and did not have any blood on its body or paws, indicating that he had not run through the rest of the house.

Murphy was handed over to the local humane society for safekeeping before he was released to Goncalves' ex the same day.

University of Idaho student Xana Kernodle sustained more than 50 stab wounds, including two to the heart, with police indicating she attempted to fight off convicted killer Bryan Kohberger before she died.

Kernolde was found lying on her back in the second-floor bedroom, where blood was smeared on various items, all over the floor and above the 20-year-old's body, according to the trove of documents released Wednesday.

She sustained defensive knife wounds to her hands — with a deep gash found between her pointer finger and thumb of her left hand, police said.

"I looked inside the bedroom Xana was laying and it was obvious an intense struggle had occurred," police said of the gruesome scene.

Kernolde was in her underwear and a long-sleeved gray shirt, both of which were soaked in blood.

An autopsy showed she suffered more than 50 stab wounds, mostly defensive, with fatal wounds to her right lung and heart.

A woman who claimed to have dated Bryan Kohberger after matching with him on Tinder just before the murders said he once asked her what she thought "would be the worst way to die," according to the newly released filings.

When she responded "a knife," Kohberger "asked her something to the effect of 'like a Ka Bar?'"

The convicted killer is believed to have used a Ka-Bar -- purchased eight months before the November 2022 murders -- when he butchered Xana Kernodle, Kaylee Goncalves, Ethan Chapin, Madison Mogen in their off-campus Idaho house.

The knife was never recovered. But he left behind a Ka-Bar sheath at the scene.

The woman, who was not identified in court docs, told police about her alleged close encounter in March 2024. She claimed she stopped talking to him "because his questions made her uncomfortable."

Police, however, noted that they were unable to corroborate her tip.

University of Idaho victim murder Kaylee Goncalves, 21, was knifed more than 20 times, leaving her "unrecognizable" in a bloody mess inside the Moscow home where she was found dead.

Goncalves' lifeless body was found with Madison Mogen, 21, lying in a pool of blood and covered in a blood-soaked pink blanket on the bed in the third-floor bedroom.

"Kaylee was unrecognizable as her facial structure was extremely damaged," according to gruesome police records released after the convicted killer was sentenced Wednesday.

An autopsy revealed she sustained blunt force and asphyxia injuries, along with stab wounds to her left lung, liver and various arteries.

The murder weapon used was not serrated — but a sharp, single-edged blade.

An inmate who was held in the same maximum security prison as Bryan Kohberger told another prisoner during a transfer that the convicted killer was "a f--king weirdo."

The male inmate reportedly opened up about his brief encounters with Kohberger while in transport to southern Idaho with a female prisoner, according to a tranche of files released by the Moscow Police Department on Wednesday.

The male inmate added that, if he didn't have to worry about facing "further legal repercussions," he would've happily beaten Kohberger himself.

He additionally asserted that he had a good judgment of character and that "[Kohberger's] eyes tell a story."

An inmate who was housed next to Bryan Kohberger in Latah County Jail described the killer's odd habits that "annoyed" him -- including washing his hands "dozens of times each day," according to newly unsealed court documents.

Kohberger also spent "45 minutes to an hour in the shower," the inmate told detectives.

"Kohberger would be awake almost all night and would only take a nap during the day," the detective wrote.

The inmate also said Kohberger would video chat with his mother "for hours each day."

A massive trove of disturbing documents revealed the gruesome, bloody details of the vicious killings convicted murderer Bryan Kohberger carried out against four University of Idaho college students.

The 30-year-old killer, who was handed four life sentences Wednesday for the heartless killings, used “a lot of force” when he repeatedly stabbed Kaylee Goncalaves, 21, Xana Kernodle, 20, Madison Mogen, 21, and Ethan Chapin, 20, to their deaths on Nov. 22, 2022, dozens of horrific documents released by Moscow police Wednesday night show.

The documents reveal that Goncalaves was stabbed more than 20 times, with Kernodle knifed upward of 50 times.

Police also found blood smeared throughout the home, with the victims' sustaining defensive wounds on their hands.

Bryan Kohberger had no apparent real-world or online connection to any of his four victims, investigators revealed after his sentencing.

“We have never, to this day, found a single connection between him and any of the four victims or the two surviving roommates,” Idaho State Police Lt. Darren Gilbertson said during a news conference after the hearing.

“We had every resource possible and we worked that tirelessly,” he said, adding that not even any social media connections had ever been identified.

It also remains unclear who, if anyone in particular at all, Kohberger was targeting in the attack, authorities added.

Karen Laramie, mother of victim Madison Mogen, and Kristi Goncalves, mother of victim Kaylee Goncalves, gave each other hugs outside court after the sentencing hearing.

Their daughters — who practically looked like twins — were best friends and roommates at the off-campus house of horrors.