Luigi Mangione update: Suspect in UHC CEO shooting hires noted NY lawyer who's married to Diddy's attorney

• UnitedHealthcare CEO Brian Thompson was fatally shot outside a Manhattan hotel on December 4.

• The police arrested Luigi Mangione, who now faces a murder charge over the killing.

• Mangione has hired a prominent New York lawyer, Karen Friedman Agnifilo, to defend him.

Luigi Mangione, the man who the police say killed UnitedHealthcare CEO Brian Thompson, has hired a high-profile attorney to defend him.

The attorney, Karen Friedman Agnifilo, is married to Marc Agnifilo, the lead lawyer defending Sean "Diddy" Combs against federal sex-trafficking charges.

The Combs and Mangione cases will be handled by the same Manhattan law firm, Agnifilo Intrater LLP, and can be expected to dominate legal news headlines in the coming year.

In getting retained, Friedman Agnifilo bested some half dozen other prominent attorneys who had been interviewed by the Mangione family last week, according to multiple people who asked not to be named because of their connection with the case.

Friedman Agnifilo last week left her previous law firm, Perry Law, to join her husband's firm as counsel, representatives for both firms told Business Insider.

Friedman Agnifilo had been a CNN commentator as recently as Wednesday, when she suggested that an insanity defense would be Mangione's best bet.

"It looks like to me there might be a 'not guilty by reason of insanity' defense that they're going to be thinking about because the evidence is going to be so overwhelming that he did what he did," she told the journalist Kaitlan Collins.

On Friday night, Collins broke the news that Friedman Agnifilo had been hired by the Mangione family.

Friedman Agnifilo worked as the chief assistant district attorney at the Manhattan district attorney's office for seven years before pivoting to private practice in 2021.

Mangione faces a charge of second-degree murder in New York over the fatal December 4 shooting of Thompson, a 50-year-old father of two from Minnesota. That charge carries a maximum sentence of life in prison.

(A charge of first-degree murder is reserved for those accused of killing a law-enforcement official or crime witness or of committing murder during the commission of another high-level crime, including robbery, rape, or kidnapping.)

Mangione is fighting extradition to New York City. The 26-year-old Ivy League graduate appeared for a hearing on December 10 at Pennsylvania's Blair County Courthouse, where a lawyer, Thomas Dickey, told the judge that Mangione was contesting his extradition. The police arrested Mangione in Altoona, Pennsylvania, on December 9 on local charges and later arraigned. Mangione made a bail request, which the judge denied during the hearing.

The suspect is set to remain at Pennsylvania's Huntingdon State Correctional Institution during the extradition proceedings. Dickey told reporters on December 10 that Mangione would plead not guilty to all the charges in Pennsylvania.

In an interview with CNN that evening, Dickey also said he anticipated Mangione would plead not guilty to the murder charge in New York and that he hadn't seen any evidence that officials in New York "have the right guy."

Mangione also faces four other charges related to the killing of the insurance CEO: two counts of criminal possession of a weapon in the second degree, one count of second-degree criminal possession of a forged instrument, and one count of criminal possession of a weapon in the third degree.

A gun found on Mangione matched the three shell casings found at the site of the shooting, the New York City police commissioner, Jessica Tisch, said during a December 11 press conference.

Tisch added that the suspect's fingerprints also matched those found on a water bottle and snack bar wrapper discarded near the crime scene.

Tisch said at a separate press conference on December 9 that upon arresting Mangione officers found a three-page handwritten document "that speaks to both his motivation and mindset."

An internal NYPD report obtained by The New York Times gave the clearest indication of a motive yet. Based on the handwritten document, which has been referred to publicly as a "manifesto," Mangione "likely views himself as a hero of sorts who has finally decided to act upon such injustices," the NYPD report said, as reported by the Times.

The NYPD report, from the department's Intelligence and Counterterrorism Bureau, said Mangione "appeared to view the targeted killing of the company's highest-ranking representative as a symbolic takedown and a direct challenge to its alleged corruption and 'power games,' asserting in his note he is the 'first to face it with such brutal honesty,'" per the Times.

In a statement to Business Insider, representatives for Nino Mangione — a Maryland state legislator who is a cousin of Mangione's — declined to comment on the news of Mangione's arrest.

"Unfortunately, we cannot comment on news reports regarding Luigi Mangione," the statement said. "We only know what we have read in the media. Our family is shocked and devastated by Luigi's arrest."

Recognized at a McDonald's

Mangione was eating in an Altoona McDonald's when an employee recognized him from the several surveillance images that authorities released in the aftermath of Thompson's killing and called the police, the New York police said at the December 9 press conference.

The Altoona police found Mangione in the McDonald's with fake IDs and a US passport, as well as a firearm and a suppressor "both consistent with the weapon used" in the shooting of Thompson in the heart of Manhattan, Tisch said.

The gun appeared to be a "ghost gun" that may have been made with a 3D printer. The NYPD's chief of detectives, Joseph Kenny, said at the press conference that such a gun could fire a 9 mm round.

A Pennsylvania criminal complaint filed against Mangione said officers found a black 3D printed pistol and 3D printed silencer inside the suspect's backpack.

When Altoona officers asked Mangione whether he had been to New York recently, he "became quiet and started to shake," the criminal complaint said.

Clothing, including a mask, was also recovered "consistent with those worn" by the gunman wanted for Thompson's killing, along with a fake New Jersey ID matching the ID that the then-unidentified suspect used to check into a Manhattan hostel before the attack, Tisch said.

Kenny said that based on the handwritten document the police found on Mangione, "it does seem that he has some ill will toward corporate America."

During a December 10 interview on NBC's "Today" show, Tisch said the document revealed "anti-corporatist sentiment" and "a lot of issues with the healthcare industry."

"But as to like particular, specific motive that'll come out as this investigation continues to unfold over the next weeks and month," the police commissioner said.

NBC News and The New York Times, each citing an unnamed senior law-enforcement official, reported that the handwritten document read in part: "These parasites had it coming."

"I do apologize for any strife and trauma, but it had to be done," it added, according to the reports.

The police believe that Mangione acted alone.

NYPD investigators traveled to Altoona last week to interview Mangione after Altoona officers took him into custody.

Blair County District Attorney Peter Weeks said at Mangione's Pennsylvania arraignment that Mangione was carrying $10,000 in cash, including foreign currency, according to the Associated Press.

Mangione disputed the amount in court.

Mangione was active on social media

Mangione posted and amplified posts on X about technological advances like artificial intelligence. He also posted about fitness and healthy living.

He frequently shared posts by the writer Tim Urban and the commentator Jonathan Haidt about the promise and perils of technology. He also appeared to be a fan of Michael Pollan, known for his writing about food and ethics.

Other deleted social-media posts showed support for Robert F. Kennedy Jr. and expressed skepticism toward both President Joe Biden and President-elect Donald Trump.

At the top of his profile was a header image with three images: a photo of himself, smiling, shirtless on a mountain ridge; a Pokémon; and an X-ray with four pins or screws visible in the lower back.

Mangione founded a company called AppRoar Studios in 2015 while still in high school. AppRoar released an iPhone game called "Pivot Plane" that is no longer available.

The two other cofounders of AppRoar could not be reached for comment.

Mangione's X account has been deactivated. A spokesperson for YouTube said that the company had terminated his three accounts on the platform and that the accounts had not been active for about seven months.

A manhunt

Mangione's arrest followed a nearly weeklong manhunt.

According to the police, Manigone was born and raised in Maryland and has ties to San Francisco. His last known address was in Honolulu.

The New York Post, citing law-enforcement sources, reported that Mangione's mother reported him missing in mid-November.

Law-enforcement sources told ABC News that FBI agents and members of the NYPD spoke with the mother a day before Mangione's arrest, following a tip, and that in the conversation she indicated that the person in the surveillance photos could be her son.

Kenny, the NYPD's chief of detectives, said Manigone had no prior arrest history in New York and no known arrests in the US.

A Luigi Mangione with a matching birthday and address received a citation for simple trespass for entering a forbidden area of a state park in Hawaii in November 2023. He pleaded no contest and paid a $100 fine.

"For just over five days, our NYPD investigators combed through thousands of hours of video, followed up on hundreds of tips, and processed every bit of forensic evidence — DNA, fingerprints, IP addresses and so much to tighten the net," Tisch said at the press conference announcing the arrest of Manigone.

Thompson was shot multiple times on a Midtown sidewalk as he was walking toward a Hilton hotel. He was steps away from a side entrance to the hotel — where he was set to speak at UnitedHealth Group's investor conference — when a hooded gunman opened fire on him from behind.

The chief executive of the nation's largest health insurer was struck at least once in the back and at least once in the right calf, the police said.

Surveillance footage showed the gunman firing his weapon as Thompson, wearing a blue suit jacket, walked several feet in front of him.

The gunman fled the scene, first on foot and then on an electric bike, which he rode into Central Park before ultimately escaping from New York City, the police said.

Shell casings and bullets found at the scene had the words "deny," "defend," and "depose" written on them, according to multiple reports citing unnamed sources. BI couldn't independently confirm these details.

In the aftermath of the attack, the NYPD offered a $10,000 reward for tips leading to the gunman's arrest, with the FBI offering a reward of up to $50,000 for information leading to his arrest and conviction.

A spokesperson for UnitedHealth Group, the parent company of UnitedHealthcare, reacted to news of Manigone's arrest in a statement to BI, saying: "Our hope is that today's apprehension brings some relief to Brian's family, friends, colleagues and the many others affected by this unspeakable tragedy. We thank law enforcement and will continue to work with them on this investigation. We ask that everyone respect the family's privacy as they mourn."

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