As sheriff’s deputies escorted Luigi Mangione into the Blair County Courthouse in Hollidaysburg, Pennsylvania, for his extradition hearing on Tuesday, he turned to face a wall of reporters and unleashed an outburst.

“That’s completely out of touch, and an insult to the intelligence of the American people and to lived experience!” Mangione screamed.

Mangione, 26, a member of a well-known Baltimore-area family, later refused to waive extradition to face charges of second-degree murder and related offenses in the deadly shooting of UnitedHealthcare CEO Brian Thompson, which happened just before 6:45 a.m. on Dec. 4 outside the New York Hilton Midtown.

Speaking to reporters after the court proceedings, Blair County District Attorney Peter Weeks said his office will be ready whenever a judge schedules the extradition hearing.

Weeks said prosecutors intend to place a detainer on Mangione after securing his extradition.

“We do not intend to delay this defendant’s extradition to New York,” Weeks said. “Their prosecution should take precedence, and then ours will follow.”

In an email, Emily Tuttle, a spokesperson for the Manhattan District Attorney’s Office, said District Attorney Alvin Bragg will seek a governor’s warrant to secure extradition. New York Gov. Kathy Hochul said in a statement that she would sign the request for one and “ensure this individual is tried and held accountable.”

In an arrest warrant filed in New York City Criminal Court, Detective Yousef Demes wrote that he reviewed surveillance video that shows a man approach Thompson from behind, hold a gun with a silencer attached at the end and fire several times.

Thompson died of a gunshot wound to the torso. He was 50.

Demes alleged that investigators collected additional evidence including footage that showed the man leaving the HI New York City Hostel after 5:30 a.m. and wearing the same clothes as the shooter.

The man, police assert, had checked into the hostel on Nov. 24 and used a fake New Jersey driver’s license with the name Mark Rosario.

Police in Altoona, Pennsylvania, were called just before 9:15 a.m. on Monday to a McDonald’s for a suspicious man who resembled “the male from a recent shooting in New York from December 4th.”

Officers reported that they found the man sitting at a table in the back of the fast-food restaurant using his laptop. He was wearing a blue medical mask.

They asked him to pull down his mask.

“We just didn’t even think twice about it,” Altoona Police Officer Tyler Frye recalled at a news conference. “We knew that was our guy.”

The man, police allege, handed them a fake New Jersey driver’s license with the name Mark Rosario.

When officers asked him whether he’d recently been in New York, they claim, he “became quiet and started to shake.”

Law enforcement told the man that he was under investigation and that they’d arrest him if he lied about his identity. That’s when he came clean and told them that his name was Luigi Mangione and provided his date of birth, police assert.

Investigators allege they asked Mangione why he lied about his identity, and he replied, “I clearly shouldn’t have.”

Police arrested Mangione on charges of forgery and false identification to law enforcement.

During a search of his backpack, police reported that they found a 3D-printed gun and silencer along with a magazine containing six 9 mm cartridges and one loose round.

He’s also facing charges of carrying a firearm without a license, tampering with records or identification and possessing instruments of a crime.

Mangione graduated in 2016 from the Gilman School, a private, independent all-boys school in Roland Park in Baltimore, and was valedictorian. He earned a bachelor’s and master’s degree in computer science in 2020 from the University of Pennsylvania.

Later, Mangione lived in Honolulu, Hawaii, and worked as a data engineer.

Earlier this year, though, Mangione disengaged.

Friends pleaded with him to return their messages, and his mother filed a missing person report. His profile on X, formerly known as Twitter, included a photo of an X-ray that showed a spine with four large screws.

One of his cousins, Del. Nino Mangione, a Republican from Baltimore County, released a statement on behalf of the family.

“We only know what we have read in the media. Our family is shocked and devastated by Luigi’s arrest,” the statement read. “We offer our prayers to the family of Brian Thompson and we ask people to pray for all involved.”

Mangione is being held in the State Correctional Institution at Huntingdon without bail. The high school valedictorian and Ivy League university graduate is now Inmate No. QQ7787.