Luigi Mangione, the man suspected of killing United Healthcare CEO Brian Thompson, had an outburst outside of a Pennsylvania courthouse on Tuesday.
"It's an insult to the intelligence of the American people," he shouted as officers quickly ushered him into the building for a hearing where he was denied bail.
Authorities in New York have obtained an arrest warrant for Mangione. However, Mangione's defense attorney informed the court Tuesday that his client would contest his extradition to New York and wants a hearing on the issue.
The 26-year-old was arrested on Monday at a McDonald's in Altoona after police received a tip about a man matching the description of the individual wanted in connection to the murder of Thompson. Images released by police show the moment officers confronted Mangione at McDonald's.
A police report says Mangione initially presented officers with a fake ID. It had the same name police said Mangione used at a hostel in New York prior to allegedly killing Thompson, police said.
When confronted about the fake ID, police said Mangione told them his real name. He was then placed under arrest.
"Officers recovered a firearm on his person as well as a suppressor, both consistent with the murder," said NYPD Commissioner Jessica Tisch. "They also recovered clothing, including a mask consistent with those worn by our wanted individual."
Police say the pistol they found in Mangione's backpack had a metal slide and barrel and a plastic handle. They also found a plastic suppressor, six 9mm bullets in a Glock magazine and one loose round.
Authorities believe the firearm was a "ghost gun" that was likely made with a 3D printer.
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Mangione is charged with firearms and forgery offenses in Pennsylvania.
While police haven't revealed a definitive motive, writings recovered during Mangione's arrest could shed light on his mindset. NYPD Chief of Detectives Joseph Kenny said the materials suggested Mangione harbored "ill will toward corporate America" and suggested "he's frustrated with the health care system in the United States."
Mangione's family, which is well-known in Maryland, where he is from, released a statement Monday night, saying they are "shocked" and "saddened" by the arrest.
"We offer our prayers to the family of Brian Thompson and we ask people to pray for all involved. We are devastated by this news," the statement says.
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