A profile emerges of the man being questioned over the fatal shooting of United Healthcare’s CEO last week in New York City.

Police announced Monday that they arrested 26-year-old Luigi Mangione on firearms charges after he was recognized by an employee at a McDonald’s in Altoona, Pennsylvania.

The Baltimore, Maryland, native had a three-page handwritten document that cited complaints about the U.S. health care system and stated the suspect’s “motivation and mindset,” officials said.

Here’s everything we’ve learned about the suspect so far.

Mr. Mangione was born and raised in Maryland and has ties to San Francisco, California, according to New York City Detective Chief Joseph Kenny.

There have been no previous arrests in New York and his most recent previous address was in Honolulu, Hawaii, police said.

According to school officials, he attended a private all-boys high school, Gilman School, in Baltimore. Mr. Mangione was named valedictorian, typically the student with the highest academic achievement in a class.

A former classmate, Freddie Leatherbury, told the Associated Press that Mr. Mangione came from a wealthy family, even by this private school’s standards.

“Honestly, he had everything going for him,” Mr. Leatherbury said.

Mr. Mangione is also a graduate of the University of Pennsylvania, where he received bachelor’s and master’s degrees in computer science and founded a video game development club, according to the school.

A friend who attended an Ivy League college at the same time as Mr. Mangione described him as a “supernormal” and “smart person.”

According to his social media profiles, Mr. Mangione worked as a data engineer for TrueCar, a digital retail website for new and used cars. A company spokesman told the BBC he had not worked there since 2023.

According to the LinkedIn profile, Mr. Mangione previously worked as a programming intern for Fixarixis, a video game developer.

According to local media, Mr. Mangione comes from a prominent family in the Baltimore area whose businesses include a country club and nursing homes.

According to media reports, he is the cousin of Republican state Rep. Nino Mangione.

Mr. Mangione was taken into custody at a McDonald’s after an employee spotted him and alerted police.

He owned a so-called ghost gun, a largely untraceable firearm that can be assembled at home using kits and, according to law enforcement officials, was probably made on a 3D printer. He also had a silencer.

Police said he had several identification cards on him, including one with his real identity and another that was fake. Those IDs included a U.S. passport and a fake New Jersey ID that was used to check into the New York hostel where the suspect was seen before the shooting

According to police, three pages of handwritten documents were also found on his person in which he appeared to express “ill will toward American corporations.”

Investigators revealed that finding the 26-year-old was a complete surprise and that his name was not on a list of suspects before Monday.

Social media profiles offer some possible clues to Mr. Mangione’s thinking.

A person matching his name and photo had an account on Goodreads, a user-generated book review site, where he gave four stars to a text called “Industrial Society and Its Future” by Theodore Kaczynski – better known as the “Unabomber Manifesto.” awarded.

Starting in 1978, Kaczynski carried out a bombing that killed three people and injured dozens more until he was arrested in 1996.

In his review, Mr. Mangione wrote: “When all other forms of communication fail, violence is essential to survival. You may not like his methods, but if you look at things from his perspective, it’s not terrorism, it’s war and revolution.”

“’Violence has never solved anything’ is a statement made by cowards and predators.”