ABC News March 2, 2023

University of Idaho murders: Knife, Glock 22 gun among items seized from suspect's family home

WATCH: University of Idaho murders: A visual timeline

When the suspect in the University of Idaho murders was taken into custody, a knife and a Glock 22 gun were among the items seized by law enforcement at his family home, according to a newly released search warrant.

Bryan Kohberger was arrested in his home state of Pennsylvania on Dec. 30, 2022, after a six-week search for a suspect in the gruesome quadruple slaying.

Monroe County Correctional Facility via Getty Images
In this handout provided by Monroe County Correctional Facility, 28-year-old Bryan Christopher Kohberger is seen in a booking photo after he was arrested, Dec. 30, 2022, in Pennsylvania.
MORE: Idaho house where 4 students were killed will be demolished

Also among the items seized at his family's Albrightsville, Pennsylvania, home on the day of his arrest were a pocket knife, a phone, computers, black face masks, several pairs of black gloves, black hats, a black mask, dark clothing and dark boots.

Eduardo Munoz/Reuters, FILE
Security workers and Pennsylvania State Agents stand guard at the entrance of the Indian Mountain Lake private community after Pennsylvania State Police took into custody Bryan Kohberger, a 28-year-old suspect wanted in the killings of four University of Idaho students, in Albrightsville, PA, Dec. 30, 2022.

One of the two roommates who survived told police she saw a man in black clothes and a mask walking past her in the house where the four murders took place.

Ted S. Warren/AP, FILE
Bare spots are seen, Nov. 29, 2022, in the snowy parking lot in front of the home where four University of Idaho students were found dead on Nov. 13, in Moscow, Idaho, after vehicles belonging to the victims and others were towed away earlier in the day.
MORE: Idaho college murders: The complete timeline of events

Kohberger is accused of stabbing to death roommates Xana Kernodle, Kaylee Goncalves and Madison Mogen, as well as Kernodle's boyfriend, Ethan Chapin, in the girls' off-campus house in Moscow, Idaho, in the early hours of Nov. 13, 2022.

Kaylee Goncalves/Instagram
A photo posted by Kaylee Goncalves only a few days ago shows University of Idaho students Ethan Chapin, Xana Kernodle, Madison Mogen and Goncalves. The four were found dead at an off-campus house on Nov. 13, 2022.

At the time of the murders, Kohberger was a Ph.D. student in the criminal justice program at nearby Washington State University. A criminal psychology book was also seized from his family's home.

In December, Kohberger and his father drove from Washington to Pennsylvania for the holidays. The documents released Thursday also show the seats, gas and brake pedals and dozens of other items were taken from the white Hyundai they drove across the country, which police also placed at the crime scene on the night of the slayings.

Kohberger, who is in custody in Idaho, has not yet entered a plea.

Ted S. Warren/AP, FILE
Bryan Kohberger, left, who is accused of killing four University of Idaho students in November 2022, looks toward his attorney, public defender Anne Taylor, right, during a hearing in Latah County District Court, Jan. 5, 2023, in Moscow, Idaho.