Bryan Kohberger made his first court appearance on Thursday after being charged with the murders of four University of Idaho students.

Kohberger, 28, is accused of murdering Kaylee Goncalves, 21, Madison Mogen, 21, Ethan Chapin, 20, and Xana Kernodle, 20, on Nov. 13 at an off-campus house in Moscow, Idaho.

Kohberger drove his 2015 white Hyundai Elantra from Washington to Pennsylvania in mid-December. During the cross-country trip with his father, Kohberger was pulled over twice in Indiana for tailgating, but was not ticketed. A report claimed that the FBI instructed police to pull over Kohberger to help build a case against the suspected killer.

Kohberger was extradited to Idaho after being arrested at his parents' home in Chestnuthill Township, Pennsylvania, on Dec. 30. Kohberger appeared before Latah County Magistrate Judge Megan Marshall on Thursday.

College roommate comes face-to-face with killer

Court documents released on Thursday claimed that a roommate came face-to-face with the man who stabbed four college students to death in the house.

Around 4 a.m., Dylan Mortensen, 21, said she heard Kaylee Goncalves say something to the effect of, "There's someone here." She opened her bedroom door but did not see anyone.

Then, Mortensen told investigators that she opened her door a second time when she thought she heard Xana Kernodle crying in her room. The woman said that she heard a male voice say, "It's OK, I'm going to help you."

The roommate opened her door a third time when she heard crying, and that's when she allegedly saw the killer lurking in the house.

Mortensen said she saw a man standing about 5'10" walking toward her. He was wearing a face mask, but she noticed that he had bushy eyebrows. He was not very muscular, but athletically built.

Mortensen said she was standing in a "frozen shock phase" as the man walked past her and exited through the back sliding glass door. She locked herself in her room after the chilling encounter.

Phone records and Hyundai Elantra sightings tip off police

The affidavit stated that the suspect's vehicle was sighted near the crime scene "multiple" times by neighborhood surveillance cameras between 3:29 a.m. and 4:20 a.m. However, the car did not have a front license plate. Investigators believed the suspect's vehicle was a Hyundai Elantra model between 2011 and 2016.

Five days after the slayings, Kohberger switched his license plates on his 2015 Hyundai Elantra.

Based on wireless data records, Kohberger's phone was turned off at approximately 2:47 a.m. on the day of the murders. The phone started communicating with the wireless network at 4:48 a.m., according to court docs. The phone was traveling on a highway south of Moscow, Idaho. The phone returned to Kohberger's residence in Pullman, Washington.

Kohberger — a doctoral student studying criminal justice and criminology at Washington State — lives about 15 minutes from the house where four students were stabbed to death.

Authorities say the phone's movements mirror the movements of a white Hyundai Elantra.

The morning after the murders, Kohberger's phone was reportedly detected near the house of the grisly slayings between 9:12 a.m. and 9:21 a.m.

Court documents say that Kohberger's phone was near the crime scene at least 12 times before the murders and as far back as August.

Expert criminal profiler believes Bryan Kohberger is an incel

Expert criminal profiler and psychotherapist John Kelly said of Kohberger, "I think he was an incel and really just hated women."

Kelly declared that Kohberger isn't the mastermind that some have painted him as.

"What’s interesting is how people are talking about how smart he is," Kelly told Fox News. "Looking at it from an investigative standpoint and looking at the mistakes he made: Criminology 101. He looks like a moron to me."

Kelly explained that murdering someone indoors is the "worst place" because there's a "good chance" of leaving evidence behind.

Suspect's DNA found at crime scene

Law enforcement found a tan leather knife sheath lying on the bed next to stabbing victim Madison Mogen. Investigators allegedly found DNA on the knife sheath.

Moscow Police Department officer Brett Payne wrote, "The sheath was later processed and had 'Ka-Bar' 'USMC' and the United States Marine Corps eagle globe and anchor insignia stamped on the outside of it. The Idaho state lab later located a single source of male DNA (suspect Profile) left on the button snap of the knife sheath."

The affidavit noted that investigators collected trash from Kohberger's family residence. DNA obtained from the trash matched the knife sheath, according to court documents released on Thursday.

"On December 28, 2022, the Idaho State Lab reported that a DNA profile obtained from the trash and the DNA profile obtained from the sheath, identified a male as not being excluded as the biological father of the suspect," the affidavit declared. "At least 99.9998% of the male population would be expected to be excluded from the possibility of being the suspect's biological father."

Kohberger applied at the local police department

In the fall of 2022, Kohberger reportedly applied for an internship with the Pullman Police Department, according to court documents. In his applicant essay, Kohberger wrote that he had "interest in assisting rural law enforcement agencies with how to better collect and analyze technological data in public safety operations."

The affidavit added, "Kohberger also posted a Reddit survey which can be found by an open-source internet search. The survey asked for participants to provide information to "understand how emotions and psychological traits influence decision making when committing a crime."

Kohberger was charged with four counts of first-degree murder and burglary.

In his first court appearance, Kohberger was denied bail on Thursday.

Investigators used Bryan Kohberger's DNA at scene, cellphone records to link him to case youtu.be