Suspected CEO killer Luigi Mangione is taken into the Blair County...

Suspected CEO killer Luigi Mangione is taken into the Blair County Courthouse in Hollidaysburg, Pa., on Tuesday. Credit: AP/Benjamin B. Braun

Alleged UnitedHealthcare CEO killer Luigi Mangione could end up reversing course and waiving extradition to New York City to face murder and other charges in the slaying of CEO Brian Thompson, the top Manhattan prosecutor said Friday.

"Indications are that the defendant may waive [extradition], but that waiver is not complete until a court proceeding," Manhattan District Attorney Alvin Bragg said Friday at an unrelated event in Times Square.

Bragg added that court officials in Pennsylvania said a court hearing, which is required in order for a defendant to waive extradition, is "not available until at least Tuesday."

Mangione, who was arrested in Altoona, Pennsylvania, Monday and has been charged with second-degree murder and other charges in the killing of Thompson, has been fighting extradition to New York.

Mangione, a 26-year-old computer scientist from Maryland, is being held without bail on forgery and weapons charges in a Pennsylvania prison after police allegedly found him in possession of multiple fake IDs and an illegal ghost gun.

Bragg did not explain why Mangione was apparently set to take a new legal tact.

Mangione's defense attorney, Thomas Dickey, did not immediately return a message Friday seeking comment on Bragg's comments.

The potential reversal caps a week of fast-pace developments that began on Monday when Mangione was captured in Pennsylvania after a six-day search that started when Thompson was fatally shot to death in a predawn ambush Dec. 4 in what NYPD Commissioner Jessica Tisch described as "a brazen targeted attack."

In the hours since the arrest, the NYPD said it has linked Mangione to the killing outside the New York Hilton on Sixth Avenue through fingerprints on a water bottle and Kind bar wrapper found near the scene.

In addition, the NYPD has said ballistics testing shows that the three shell casings found at the scene of the killing were fired by the gun that Mangione had with him when he was arrested.

The shell casings had the words delay," "deny" and "depose," which police have said could have a connection to the health insurance industry.

Investigators are examining whether Mangione's alleged negative feelings about the health care insurance industry served as the motive in Thompson's killing.

On his way into a Pennsylvania court Tuesday, Mangione struggled with sheriff’s deputies leading him into the courthouse ahead of the extradition hearing. A handcuffed Mangione, wearing an orange jumpsuit, shouted comments during his brief scuffle with the deputies that included Mangione saying "clearly out of touch and an insult to the intelligence of the American people," according to a broadcast. His full comments were not audible.

Authorities have said that Mangione appears to have been motivated to act by the fact that UnitedHealthcare wields massive influence in the nation's health insurance industry, although Mangione does not appear to have been insured by the company.

Mangione knew for months beforehand about the investor meeting that brought Thompson to New York City, police officials said.

Authorities have said Mangione was also found with a "manifesto" that detailed "ill will" toward corporate America.

Suffolk Police Officer David Mascarella is back on the job after causing a 2020 crash that severely injured Riordan Cavooris, then 2. NewsdayTV's Andrew Ehinger and Newsday investigative reporter Paul LaRocco have the story. Credit: Newsday/Kendall Rodriguez; Jeffrey Basinger, Ed Quinn, Barry Sloan; File Footage; Photo Credit: Joseph C. Sperber; Patrick McMullan via Getty Image; SCPD; Stony Brook University Hospital

'It's disappointing and it's unfortunate' Suffolk Police Officer David Mascarella is back on the job after causing a 2020 crash that severely injured Riordan Cavooris, then 2. NewsdayTV's Andrew Ehinger and Newsday investigative reporter Paul LaRocco have the story.

Suffolk Police Officer David Mascarella is back on the job after causing a 2020 crash that severely injured Riordan Cavooris, then 2. NewsdayTV's Andrew Ehinger and Newsday investigative reporter Paul LaRocco have the story. Credit: Newsday/Kendall Rodriguez; Jeffrey Basinger, Ed Quinn, Barry Sloan; File Footage; Photo Credit: Joseph C. Sperber; Patrick McMullan via Getty Image; SCPD; Stony Brook University Hospital

'It's disappointing and it's unfortunate' Suffolk Police Officer David Mascarella is back on the job after causing a 2020 crash that severely injured Riordan Cavooris, then 2. NewsdayTV's Andrew Ehinger and Newsday investigative reporter Paul LaRocco have the story.