Police arrested a 26-year-old man on Monday in the Manhattan killing of UnitedHealthcare바카라 게임 웹사이트�s CEO after they say a Pennsylvania McDonald's worker alerted authorities to a customer who resembled the suspected gunman.The suspect, identified by police as Luigi Nicholas Mangione, had a gun believed to be the one used in Wednesday바카라 게임 웹사이트�s attack on Brian Thompson, as well as writings expressing anger at corporate America, police said. What we know so farAccording to officials, the 26-year-old was born and raised in Maryland and has no prior arrest history in New York.Mangione was allegedly spotted Monday at a McDonald's in Altoona, Pennsylvania, about 85 miles east of Pittsburgh. A restaurant employee recognized him from images police have circulated.Altoona police were called and took the man to a local precinct for questioning. The NYPD sent detectives to Pennsylvania to question the person taken into custody. Late Monday, Manhattan prosecutors filed murder and other charges against Mangione, according to an online court docket. He remained jailed in Pennsylvania, where he was charged with possession of an unlicensed firearm, forgery and providing false identification to police. Mangione was being held in Pennsylvania without bond after a hearing Monday night. He is expected to eventually be extradited to New York, authorities said. What evidence did police find?Mangione was arrested after he was found in possession of a ghost gun capable of firing a 9mm round, authorities said.Mangione was found with a fake New Jersey driver's license, like the one the NYPD has said the suspect used to check in at a Manhattan hostel. Mangione had clothing and a mask similar to those worn by the shooter, according to NYPD Commissioner Jessica Tisch.Altoona police also recovered a computer."It does seem that he had some ill will toward corporate America," NYPD Chief of Detectives Joseph Kenny said.Citing a law enforcement official, The Associated Press reported that authorities also found a silencer and writings that appeared to be critical of the health insurance industry.Ties to Maryland, California and HawaiiAccording to Chief of Detectives Joe Kenny, Mangione has ties to both San Francisco, California, and Honolulu, Hawaii.Mangione was valedictorian of the Class of 2016 at the Gilman School, an elite private all-boys school in Baltimore, Maryland. In his graduation speech, he talked about his classmates바카라 게임 웹사이트� 바카라 게임 웹사이트�incredible courage to explore the unknown and try new things.바카라 게임 웹사이트� He praised their collective inventiveness and pioneering mindset.WBAL in Baltimore confirmed that Mangione was an alumnus and valedictorian of the school.The Associated Press reports that Mangione comes from a prominent Maryland family. His grandfather Nick Mangione, who died in 2008, was a successful real estate developer. One of his best-known projects was Turf Valley Resort, a sprawling luxury retreat and conference center outside Baltimore that he purchased in 1978. The father of 10 children, Nick Mangione prepared his five sons 바카라 게임 웹사이트� including Luigi Mangione바카라 게임 웹사이트�s father, Louis Mangione 바카라 게임 웹사이트� to help manage the family business, according to a 2003 Washington Post report.The Mangione family also purchased Hayfields Country Club north of Baltimore in 1986. On Monday, Baltimore County police officers blocked off an entrance to the property, which public records link to Luigi Mangione바카라 게임 웹사이트�s parents. A swarm of reporters and photographers gathered outside the entrance.He is also the cousin of a Baltimore County delegate.Luigi Mangione earned undergraduate and graduate degrees from the University of Pennsylvania, an Ivy League school.His social media posts also suggest that he belonged to the fraternity Phi Kappa Psi. They also show him taking part in a 2019 program at Stanford University, and in photos with family and friends at the Jersey Shore and in Hawaii, San Diego, Puerto Rico, and other destinations.KCRA in California reports that an apparent LinkedIn page for Luigi Mangione has biographical details that line up with that description.Mangione's LinkedIn page said that he worked part-time as a head counselor teaching about artificial intelligence to 바카라 게임 웹사이트�gifted high school students바카라 게임 웹사이트� at Stanford University during the summer of 2019.That included leading a seven-member residential staff 바카라 게임 웹사이트�in creating an inclusive, fun and stimulating residential community,바카라 게임 웹사이트� according to the social media page.According to the program바카라 게임 웹사이트�s website, the pre-collegiate studies program hosts students from across the world.바카라 게임 웹사이트�We can confirm that a person by the name of Luigi Mangione was employed as a head counselor under the Stanford Pre-Collegiate Studies program between May and September of 2019,바카라 게임 웹사이트� Stanford spokesperson Dee Mostofi told KCRA 3 in a statement.The same LinkedIn page said Mangione has worked at Santa Monica-based TrueCar, Inc. for the past four years as a data engineer.A TrueCar representative said the company generally doesn't comment on personnel matters but that it could confirm Mangione "has not been an employee of our company since 2023."Representatives for the NYPD told KCRA they could not confirm details about Mangione's ties to California beyond what has already been announced or the authenticity of the LinkedIn page at this time.The Associated Press contributed to this report.