The former Massachusetts Air National Guardsman charged with leaking military secrets to members of an online gaming community intends to plead guilty.

“Now comes the United States, through undersigned counsel, and with the assent of the defendant respectfully requests that the Court schedule this matter for a Rule 11 hearing on March 4, 2024, the date currently set for the Pretrial Conference,” reads the entirety of the motion filed in the case of Jack Teixeira Thursday afternoon.

A Rule 11 hearing in federal law is a change of plea hearing. Teixeira, of North Dighton, had previously pleaded not guilty to the six counts of willful retention and transmission of national defense information. There was no further information available Thursday.

Teixeira, 22, was arrested last April on multiple counts of unauthorized retention and transmission of national defense information and unauthorized removal and retention of classified documents or material. A federal grand jury indicted him on the charges, which carry a possible 15-year prison sentence, last June.

U.S. District Court Magistrate Judge David H. Hennessy ordered him detained ahead of trial and maintained that order despite a flurry of appeals from defense attorneys.

Prosecutors accuse Teixeira of abusing his security clearance as a Massachusetts Air National Guardsman to share more than 40 images of classified documents largely regarding the war in Ukraine to the roughly 50 members of a Discord server he led. A “server” is what the gaming-dominated social media platform Discord calls individual groups or forums.

Specifically, Teixeira is accused of sharing information on Russia’s war in Ukraine, including troop movements, as well as other topics on a server he led called “Thug Shaker Central” that had about 50 members.

Teixeira had joined the Air National Guard in September 2019, according to charging documents, and served on a base at Otis Air National Guard Base on Cape Cod as an IT specialist — a job officially called a “cyber defense operations journeyman.” He rose to the E-3 rank in May 2022.

This role allowed him to see documents he wasn’t otherwise privy to — especially after he was granted Top Secret clearance with access to Sensitive Compartmented Information, in 2021, following a required 8- to 15-month approval process, according to the U.S. General Services Administration. Prosecutors allege he first began typing out information he had found but then, in January 2023, began posting photos of materials stamped SECRET and TOP SECRET.

“I know that to acquire his security clearance, Teixeira would have signed a lifetime binding non-disclosure agreement in which he would have had to acknowledge that the unauthorized disclosure of protected information could result in criminal charges,” an FBI agent wrote in an affidavit in support of the initial arrest and charges.

The leaked documents had a nearly instant effect, according to multiple reports, including U.S. intelligence analysis of Taiwan’s air defenses that show it could be vulnerable to an attack by China.

And it had quick ramifications for the military.

Just days after Teixeira’s arrest, the Pentagon said it was revoking access to sensitive information for many members and doing an overhaul on its information policies.

Then came others at the Air National Guard 102nd Intelligence Wing at the Otis base, where it later came to light that his superiors had previously admonished him for copying information. The Air Force confirmed to the Associated Press on April 18, 2023, that it had stripped the Wing of the intelligence duties and assigned it elsewhere.

Last December, 15 airmen at the base were disciplined following an Air Force Inspector General investigation that found that Teixeira’s alleged actions were the primary cause of the leak, there were “also a number of contributing factors, both direct and indirect, that enabled the unauthorized disclosures to occur and continue over an extended period of time.”

The actions ranged from relieving personnel from their positions, including command positions, to non-judicial punishment, the Herald reported then.

Prosecutors were also fearful of Teixeira’s mental state during the time of the alleged leakage, stating in a late-April 2023 motion that he had been using his work computer to look up mass casualty shooting events and even posting troubling messages like “I hope isis (ISIS) goes through with their attack plan and creates a massacre at the World Cup” and that he would “kill a (expletive) ton of people” to “(cull) the weak minded.”

The case had been a complicated one as the evidence was, obviously, almost entirely classified government information.

Teixeira’s defense attorneys, Brendan Kelley and Gene Franco from the Federal Public Defender’s office in Boston’s Seaport district, where the federal court is located, lacked the necessary security clearance to review the materials federal prosecutors had collected.

The team made a request for the addition of a lawyer who specialized in sensitive matters and Judge Hennessey allowed it. Private New York City-based attorney Michael Backrach, whose prior cases include representing a Guantanamo Bay detainee, was added to the team last summer.