Luigi Mangione pleaded guilty in federal court. He did this after people thought he might say he was guilty to avoid another trial.

Prosecutors said Mangione shot Brian Thompson. He did this on December 4, 2024, outside a hotel in Manhattan.

Mangione's team might try to say he cannot be tried twice. But it is not clear if they will win.

This is about the attack on UnitedHealthcare CEO Brian Thompson and Luigi Mangione's getaway.

A video shows a man with a gun killing Brian Thompson. The man shot Thompson from behind and then ran away on a bike.

The judge asked Mangione if he knew he could get life in prison. Mangione said, 'Yes.'

Mangione told the judge he called UnitedHealthcare. He said he was an investor to get information about a meeting.

Mangione did not say anything else in court. He just sat there.

This is a photo of Brian Thompson from 2017. He was the CEO of UnitedHealthcare.

Mangione said he learned about a meeting. He found out UnitedHealthcare would have a meeting and he wanted to go.

The judge told Mangione to speak louder. Mangione said he looked online for the meeting location and then called the company.

Mangione said he went to New York to shoot Brian Thompson.

Brian Thompson was shot from behind. He was killed on his way to a meeting in New York City.

Mangione said, 'I shot Mr. Thompson in Manhattan.' He knew what he was doing.

Mangione said, 'I knew what I was doing.'

The judge said the jury's names will be secret. This is because of threats to the people who will testify.

Prosecutors showed some of the evidence. This included a video of Mangione arriving in New York and following Thompson.

A video shows a man with a gun. He shoots Thompson from behind and then shoots him again.

The police found Mangione's DNA and fingerprints. They also found the gun and have a witness who saw the shooting.

This is a wanted poster for Mangione. It is from the FBI.

The judge set a date for Mangione's sentencing. It will be on December 18.

There is a dispute about Mangione's trial. It is about the murder of Brian Thompson.

UnitedHealth Group said they are glad the police caught Thompson's killer. They are still thinking about Thompson's family.

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Thompson's family also made a statement. They are glad the person who killed Thompson is being punished.

Thompson's family said they are glad about the guilty plea. They want the court to make sure Mangione gets a severe sentence.

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Mangione faces many charges. These include murder, stalking, and having fake ID.

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This is a developing story. We will have more updates soon.