Luigi Mangione waives extradition after being charged with murder of UnitedHealthcare's CEO

Luigi Mangione, UnitedHealthcare CEO Brian Thompson's suspected shooter, has waived his right to appeal extradition and will travel to New York to face the charges against him.

The 26-year-old has left a courthouse in Pennsylvania having agreed to be take to face the various charges held against him, including one count of first-degree murder, and is expected to be flown into New York by law enforcement.

The University of Pennsylvania graduate was clean-shaven when he was pictured outside the court and said nothing to the press outside as he was placed into an unmarked cop car.

The preliminary hearing on forgery and firearms charges and consideration of a fugitive from justice complaint against Luigi Mangione may not take long.

Court officials said Mangione will attend the early morning proceedings at the Blair County Courthouse in Hollidaysburg.

If a judge authorises his extradition, Mangione would then be brought to New York, where he could appear in state court for arraignment on Thursday afternoon or Friday.

The district attorney in Blair County, Pennsylvania, Pete Weeks, has said he was willing to put the Pennsylvania charges on hold while New York authorities prosecute Mangione for the December 4 killing of UnitedHealthcare chief executive Brian Thompson.

Brian Thompson died while walking to an insurance conference in New York (UnitedHealth Group)

Mangione faces charges of murder as an act of terrorism in New York.

Weeks said he would not talk about what might happen at the Thursday hearings or if evidence will be presented.

Mangione is accused of giving police a fake New Jersey identification and having a gun and silencer in his bag.

“Those are decisions that rest exclusively with Mr. Mangione and the rights afforded to him,” Weeks wrote in a news release sent out on Tuesday.

In a court filing last week, Mangione’s defence attorney Tom Dickey argued prosecutors had not shown there is sufficient evidence to hold Mangione, that he was in New York when Thompson was killed or that he is a fugitive from justice.

Mangione, 26, of Towson, Maryland, was arrested on December 9 when police were called to a McDonald’s restaurant on a commercial strip in Altoona, Pennsylvania after he was reported to match the description of Thompson’s killer.

Luigi Mangione was taken into custody in Pennsylvania earlier this month (Altoona Police Department)

Thompson was gunned down on the street as he walked to the hotel where his Minnesota-based company was holding an investor conference.

The shooting was captured on security video, but the suspect eluded police before Mangione was captured about 277 miles from New York.

Authorities say Mangione was carrying the gun used to kill Thompson, a passport, a fake ID, and about 10,000 dollars in US and foreign currency.

His lawyer, Dickey, has questioned the evidence for the forgery charge and the legal basis for a gun charge.

He had previously indicated Mangione would fight extradition to New York while being held in a Pennsylvania state prison.

Mangione, an Ivy League computer science graduate from a prominent family, was carrying a handwritten letter that called health insurance companies 'parasitic' and complained about corporate greed, according to a law enforcement bulletin obtained by The Associated Press last week.