Luigi Mangione was arrested at a McDonald's in Pennsylvania on unrelated gun charges after being recognized by an employee: NYPD
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The New York Police Department has filed second-degree murder and other charges against Luigi Nicholas Mangione in connection with the fatal shooting of UnitedHealthcare CEO Brian Thompson, according to an online court docket.
The docket shows 26-year-old Mangione is also charged with possession of a loaded firearm, possession of a forged instrument and criminal possession of a weapon.
The forged instrument is the fake New Jersey driver's license he allegedly used to check into the hostel on the Upper West Side.
Mangione remains in the custody of the Pennsylvania Department of Corrections after being arrested at a McDonald's on Monday morning, pending his extradition to New York.
Mangione has also been charged with five crimes in Pennsylvania, including carrying a gun without a license, forgery, falsely identifying himself to authorities and possessing "instruments of crime," according to a newly released criminal complaint.
The charging document alleges that Mangione lied about his identity to police and carried the ghost gun without a license.
He began shaking when police asked if he had been in New York recently, court records said. He is scheduled to go before a judge in western Pennsylvania where he was being held on gun charges.
Investigators are working to determine whether anyone else was involved in Thompson's death.
Mangione is being ordered to be held without bail after his brief court appearance.
Officials say the 26-year-old, from Maryland, also has ties to San Francisco and was a graduate of the University of Pennsylvania in Philadelphia. His last known address was in Honolulu, Hawaii.
"Unfortunately, we cannot comment on news reports regarding Luigi Mangione. We only know what we have read in the media. Our family is shocked and devastated by Luigi's 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 Mangione family said in a statement Monday night.
RELATED: What we know about Luigi Mangione, person of interest in UnitedHealthcare CEO's murder
Mangione was on a Greyhound bus traveling through Altoona on Monday morning, sources said, when he got off and walked into a McDonald's where a witness recognized him from the images of the suspect circulated by police.
Mangione was sitting and eating when a McDonald's employee reported him, and "because of that, we believe we have a strong person of interest," New York City Mayor Eric Adams said at a news conference Monday.
"He matches the description of the person we are looking for," Adams said.
A customer thought Mangione looked suspiciously like the shooting suspect and alerted the employee, who called police, authorities said.
Adams said they believed we had a "strong person of interest" in the shooting death. Officials later confirmed during a news briefing in Altoona Monday night that Mangione is now a suspect in the killing.
Mangione had a ghost gun capable of firing a 9 mm round and a suppressor, police said. The gun and suppressor were "consistent with the weapon used in the murder," NYPD Commissioner Jessica Tisch said. The gun "may have been made on a 3D printer," police said.
Mangione also had a three-page handwritten document "that speaks to his motivation and mindset," Tisch said. The writings mention UnitedHealthcare by name, law enforcement sources told ABC News.
The sources described the handwriting as sloppy and included these quotes: "These parasites had it coming" and "I do apologize for any strife and trauma, but it had to be done."
"It does seem that he had some ill will toward corporate America," police said.
Authorities are going through his writings more thoroughly to understand his motive.
Mangione also had multiple fake IDs with him, including a fake New Jersey ID matching the ID the suspect used to check into a hostel in New York City before the shooting, Tisch said.
He was carrying a U.S. passport that identified him as Luigi Mangione, police said.
Police also recovered clothes, including a mask, "consistent with those worn by our wanted individual," Tisch said.
Police said it appears Mangione acted alone and they did not have his name before now.
Mangione is a graduate of the University of Pennsylvania in Philadelphia, a university spokesperson told WPVI-TV. He majored in computer science and graduated in May 2020.
Authorities said they're working to trace his movements from New York City to Pennsylvania.
Pennsylvania Gov. Josh Shapiro said he was traveling between Philadelphia and Pittsburgh with stops in between, including in Altoona.
Police said they are working to develop a full sense of his timeline in Pennsylvania and how long he has been in Altoona.
Shapiro thanked the individual at McDonald's "who acted as a hero."
"I want to ask all of our fellow Pennsylvanians to demonstrate the same type of thoughtfulness and courage and smarts as the individual at McDonald's did this morning and help law enforcement here in Pennsylvania as we continue with our investigation," Shapiro said during a press briefing Monday evening.
He also thanked the Altoona police who "acted swiftly" to apprehend Mangione.
Shapiro lamented how some online have celebrated rather than condemned Thompson's killing.
"I understand people have real frustration with our health care system," Shapiro said. "This killer is not a hero. He should not be hailed."
A UnitedHealth Group spokesperson said in a statement Monday, "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."
On Wednesday morning, the masked gunman shot Thompson at point-blank range outside the New York Hilton Midtown, where Thompson's company was holding an investors conference.
Tisch described the attack as "brazen" and "targeted."
New video obtained by ABC News shows the killer waiting for Thompson moments before the shooting.
The video shows others pass by, and then, when the masked gunman sees Thompson, he runs across the street and opens fire. The video, which has not previously been seen publicly, appears to support the police narrative that the shooter targeted Thompson because he loitered while others wandered by.
Right after the shooting, the suspect fled by bike through Central Park to the Upper West Side. He then took a taxi to the Port Authority bus facility at 178th Street and boarded a bus out of New York City, according to police.
An "enormous amount of forensic evidence" has been recovered, as well as "hundreds and hundreds and hundreds of hours" of video, police said Monday.
On Sunday, members of the New York Police Department's dive team searched underwater in Central Park near the Bethesda Fountain. Nothing was found, police said.
The suspect's backpack -- with a jacket and Monopoly money inside -- was found nearby in Central Park.
ABC News' Bill Hutchinson, Jon Haworth, Ivan Pereira and David Brennan contributed to this report.