Idaho student murders suspect Bryan Kohberger plans to fight the grand jury indictment against him in the November 2022 stabbing deaths of four undergrads, and his lawyers have asked the court to stay proceedings as they wrestle with prosecutors over the disclosure of more materials, according to new court filings.

Police arrested Kohberger, 28, about seven weeks after they allege he snuck into an off-campus rental home on Nov. 13, 2022, and killed Kaylee Goncalves, 21, Madison Mogen, 21, Xana Kernodle, 20, and Ethan Chapin, 20.

Judge John Judge entered a not guilty plea on Kohberger's behalf at his arraignment last month when the defendant chose to "stand silent."

In court filings, Kootenai County Public Defender Anne Taylor explained the move was intended to "preserve his right to contest the indictment."

IDAHO MURDERS: BRYAN KOHBERGER'S DEFENSE STANDS SILENT AT ARRAIGNMENT; JUDGE ENTERS NOT GUILTY PLEAS

Bryan Kohberger appears in an Idaho courtroom

Public defender Anne Taylor, center, and Bryan Kohberger, right, enter the courtroom for a motion hearing on June 9, 2023, in Moscow, Idaho. (Zach Wilkinson/Moscow-Pullman Daily News via AP, Pool)

"Mr. Kohberger has the right and intends to contest the indictment," Taylor said in a motion to stay proceedings last week amid a standoff with prosecutors as she seeks to obtain grand jury materials.

In order to fight the indictment, she said, the defense wants additional grand jury materials that prosecutors have not handed over.

"Mr. Kohberger seeks to stay the proceedings as appropriate relief while the matter of the grand jury record is argued and prepared," Taylor wrote. "He is exercising due diligence to discover the grounds upon which to file a motion to dismiss related to how the grand jury was selected. He is being delayed through no fault of his own."

Idaho victims last photo

Madison Mogen, top left, smiles on the shoulders of her best friend, Kaylee Goncalves, as they pose with Ethan Chapin, Xana Kernodle and two other housemates in Goncalves' final Instagram post, shared the day before the four students were stabbed to death. (@kayleegoncalves/Instagram)

Prosecutors from Latah County and the state attorney general's office countered that Kohberger's argument "is misplaced" and "deficient" under state law.

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"Defendant asks this Court to put the cart before the horse – stay the case now, and Defendant will give the Court a basis for the stay later," prosecutors wrote in their objection. "The Court should decline to adopt this backward reading of the requirements of Idaho Code §2-213. Defendant’s motion should be denied."

Bryan Kohberger prosecutor listens

Latah County prosecutor Bill Thompson listens during an arraignment hearing for Bryan Kohberger, who is charged with killing four University of Idaho students in November 2022, in Latah County District Court, May 22, 2023, in Moscow, Idaho. (Zach Wilkinson/Moscow-Pullman Daily News via Pool)

The lengthy investigation involved police in multiple states and help from the FBI. According to court documents, police recovered DNA from a Ka-Bar knife sheath discovered next to Mogen's body that helped lead them to Kohberger's parents' home in Albrightsville in Pennsylvania's Pocono Mountains.

BRYAN KOHBERGER CASE: MOSCOW PROSECUTOR CAN SIDESTEP STALL TACTIC WITH GRAND JURY INDICTMENT

Police arrested him there on Dec. 30, 2022. Through his attorney in Pennsylvania before he waived extradition to Idaho, he said he was "eager to be exonerated."

He entered no plea at his initial appearance, and Taylor's office had planned to challenge the probable cause used for his arrest warrant in a preliminary hearing originally scheduled for June 26.

Bryan Kohberger lawyer listens

Latah County Judge John C. Judge presides over the arraignment hearing for Bryan Kohberger in Latah County District Court in Moscow, Idaho, on May 22, 2023. (Zach Wilkinson/Moscow-Pullman Daily News via Pool)

UNIVERSITY OF IDAHO STUDENT STABBINGS TIMELINE

However, a grand jury handed down a superseding indictment last month on four counts of first-degree murder and a felony burglary charge, meaning the preliminary hearing was no longer necessary.

"The defense is going to ultimately get a lot of the information related to the grand jury, as long as there is a legal basis," said Edwina Elcox, a prominent Boise-based defense attorney whose past clients have included Lori Vallow. "In order to determine if there is a challenge to any of the jurors or the entire panel, they have to have the information related to the people that made up the grand jury."

She told Fox News Digital the delivery of that information to the defense would likely require a court order.

Kohberger has a master's degree in criminal justice and was studying for a Ph.D. in criminology at Washington State University, which is less than 10 miles from the University of Idaho campus and where the slayings took place.

Wilson Short Hall exterior

Wilson-Short Hall at the Washington State University campus in Pullman, Washington, which houses the school's Department of Criminal Justice and Criminology. (Derek Shook for Fox News Digital)

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Judge set a hearing on the defense motion for June 27.

Kohberger is being held without bail at the Latah County Jail in Moscow, Idaho.

He could face the death penalty if convicted. Trial is scheduled to begin on Oct. 2 and could take up to six weeks.