Updated

A Pennsylvania court has unsealed additional documents in the Idaho student murders case, revealing that police seized a knife during a raid on the suspect's parents' home in Pennsylvania.

Pennsylvania State Police and the FBI arrested suspect Bryan Kohberger at his parents' house in the Pocono Mountains on Dec. 30 during a nighttime tactical raid. 

They searched the home, his car, the garage and a shed on the property.

The new warrants reveal police took a door panel from his car, seat cushions, headrests, seatbelt, visor, brake and gas pedals, a band-aid, "maps and documents" and other items.

IDAHO MURDERS: BRYAN KOHBERGER'S PENNSYLVANIA WARRANT UNSEALED

Excerpt from the court filings

Pennsylvania court documents pertaining to the raid on Bryan Kohberger's parents' house in the Pocono Mountains were unsealed Thursday, following the expiration of a 60-day court order keeping them secret.

From the house, police seized several weapons, including a knife and a Glock handgun with three magazines. They took a cellphone, laptop and black face masks, as well as a black hat.

The list also included a prescription, a "green leafy substance" in a container, vehicle paperwork and other documents, including a phone bill and a handwritten password, and a book "with underlining on page 118."

Excerpt from the court filings

The first item seized from Bryan Kohberger's parents' home listed is a knife. All four University of Idaho victims had been stabbed to death around 4 a.m. on Nov. 13, 2022, according to police. Another item that stands out — a "book with underlining on page 118."

Additional items seized in the Dec. 30 raid on Kohberger's parents' home include a computer; hardware; paperwork from Washington State University, where he was studying for a Ph.D. in criminology a few miles from the victims' home; and a spiral notebook.

Police were looking for anything that could connect Kohberger with the victims, including evidence he had been surveilling them or compiling information.

LISTEN: THE FOX TRUE CRIME PODCAST WITH EMILY COMPAGNO

The 4 a.m. ambush attack killed 21-year-old University of Idaho students Kaylee Goncalves and Madison Mogen, their 20-year-old housemate Xana Kernodle, and her boyfriend Ethan Chapin, also 20. 

Excerpt from the court filings

The documents show that police ripped apart Bryan Kohberger's car, which investigators in Idaho said had stalked the victims' home at least a dozen times prior to the murders.

Kohberger, a 28-year-old criminology Ph.D. student at Washington State University during the attack, is accused of stabbing all four undergrads to death on Nov. 13, 2022. The schools are about seven miles apart.

Excerpt from the court filings

A witness told police she saw a man in dark clothes and a black mask with "bushy eyebrows" leaving out a back door after the murders. Police seized numerous pieces of dark clothing, gloves and masks from Bryan Kohberger's parents' house, where he returned for Christmas break after finishing his semester in Washington.

They took multiple pairs of boots and other clothing items.

Excerpt from the court filings

The list includes "ID cards inside glove box." They also took a shop vac.

Another item police found — a "note to dad from Bryan."

Excerpt from the court filings

Another item seized was a maroon-colored spiral notebook, listed after a "note to dad from Bryan."

According to previously released court documents, police found a Ka-Bar knife sheath near Mogen's body and recovered a DNA sample from the snap.

During the raid, police also discovered a sheathed kitchen knife at the Kohberger home, according to Thursday's documents, and a pocket knife.

The genetics matched a familial sample taken from the trash outside Kohberger's parents' house.

Kohberger inset, white Elantra pulled over

Bryan Kohberger's white 2015 Hyundai Elantra on the side of a road in Indiana during a traffic stop in December. Inset: Bryan Kohberger arrives in court in Idaho. (Hancock County Sheriff's Department, Inset: Kai Eiselein/Pool)

A split photo of the Idaho victims and the school

A split photo showing the victims, from left, University of Idaho students Ethan Chapin, 20; Xana Kernodle, 20; Kaylee Goncalves, 21; and Madison Mogen, 21.  (Derek Shook for Fox News Digital/Jazzmin Kernodle via AP/Instagram/ @kayleegoncalves)

On Tuesday, additional documents confirmed that police performed a buccal swab on the suspect when they arrested him on Dec. 30.

Front of the house with plywood boards on all the windows and doors

Exterior view of the home where the slaying of four University of Idaho students occurred is boarded up on Feb. 23, 2023. (Derek Shook for Fox News Digital)

CLICK HERE TO GET THE FOX NEWS APP

Kohberger is being held at the Latah County Jail in Moscow, Idaho, without bail. His next court date is June 26. He faces four counts of first-degree murder and a felony burglary charge.