A murder charge was filed Monday night in New York against the man accused of shooting UnitedHealthcare CEO Brian Thompson outside a busy New York City hotel last week, according to online court documents.

Hours before murder and weapons charges were filed in New York, 26-year-old Luigi Mangione appeared in court on a preliminary charge in Pennsylvania, where he was arrested earlier in the day at a McDonald’s in Altoona. There he was accused of two felonies – forgery of documents and carrying a firearm without a license – as well as three misdemeanors: tampering with records or identification, possession of instruments of crime and presenting false identification to law enforcement authorities.

After appearing in court in Pennsylvania, law enforcement officials told reporters that charges would soon be filed in New York.

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Online court documents showed Monday night that Mangione was charged with one count of murder, three counts of criminal possession of a weapon and one count of possession of a forged instrument.

The Manhattan District Attorney’s Office did not immediately respond to a request for comment Monday evening.

Police officers had been searching for days for the suspected shooter in Thompson’s murder and distributed photos and videos of the person who carried out the targeted attack on the CEO.

On Monday, a McDonald’s employee called police about a suspicious person at the Altoona restaurant, and police later said they discovered he was carrying a gun similar to the one used in the fatal shooting.

Mangione was also carrying a fake ID with the same name that the suspected shooter had used at a New York hostel, police said. According to police, a silencer from a gun was also found.

Investigators found a handwritten document that “reflects both his motivation and his attitude,” NYPD Commissioner Jessica Tisch told reporters on Monday.

Police did not provide any information about a possible motive, but NYPD Chief Detective Joseph Kenny said Mangione appeared to have “ill will toward corporate America.”

Thompson, 50, was on his way to the UnitedHealth Group investor conference at New York’s Hilton Midtown when a masked gunman approached from behind and opened fire around 6:45 a.m. Wednesday. Security video of the shooting was shown.

Other pedestrians had walked past the gunman before he shot Thompson, leading police to believe Thompson was the gunman’s sole target.

Thompson, who was shot in the back and a leg, was pronounced dead at Mount Sinai West.

The shooter fled on foot and then by bicycle into Central Park, authorities said.

A few hours after the shooting, police called Thompson’s killing a “premeditated, pre-planned targeted attack.”

Three live 9mm cartridges and three fired 9mm shell casings were found at the scene, and a cell phone was found nearby.

The words “deny,” “delay” and “deposit” were written in marker on three pieces of recovered ammunition, one on each, police said.

According to his wife, Paulette Thompson, Thompson, who lived in Minnesota, had recently received threats but had not changed his travel routine.

He was not with a security unit when the shooting occurred.

“Yes, there were some threats,” Paulette Thompson told NBC News hours after the attack. “Basically, I don’t know, a lack of reporting? I don’t know the details. All I know is that he said there were some people who threatened him.”

Police believe the gunman arrived in New York City on Nov. 24 by Greyhound bus from Atlanta and stayed at a hostel on the Upper West Side, where he rarely removed or pulled down his mask.

He paid in cash and probably used a fake ID to stay at the hostel, police said.

After the shooting, police searched the city for evidence, including the gun. Officials also released several photos of a person of interest in hopes of uncovering the man’s identity.

According to officials at the Ivy League school, Mangione graduated from the University of Pennsylvania in May 2020 with multiple degrees, receiving a BS in engineering and a Master of Science in engineering. Public records and his social media profiles show he lived in Philadelphia and Hawaii and worked for the University of Pennsylvania.

Mangione attended the private, all-boys Gilman School in Baltimore in high school. He graduated in 2016, the school confirmed.

Thompson’s killing sent shockwaves through the corporate and health care worlds and raised questions about adequate security for top executives.

According to the company’s two most recent proxy statements, UnitedHealth Group did not regularly use personal security services for executives. Companies must report security expenses of more than $10,000 per year for directors or officers.

Humana and Cigna, two other major healthcare giants, both said in their recent proxy statements that they provide personal security to executives. However, those records did not indicate which executives received protection or how much was spent.

CVS Health, another major player in health insurance, requires its CEO to use company aircraft and a company driver as part of a disclosed “executive safety program,” regulatory filings show.

The shooting also brought to light a dark, angry American view of private health care providers, with many social media users celebrating Thompson’s death or offering possible excuses for his killing.