HOLLIDAYSBURG, PENNSYLVANIA - DECEMBER 10: Suspected shooter Luigi Mangione is led into the Blair County Courthouse for an extradition hearing December 10, 2024 in Hollidaysburg, Pennsylvania. Mangione has been arraigned on weapons and false identification charges related to the fatal shooting of United Healthcare CEO Brian Thompson in New York City. Mangione is incarcerated in the State Correctional Institution in Huntingdon, Pennsylvania awaiting extradition to New York. Jeff Swensen/Getty Images

Arrested five days after his nationwide manhunt, UnitedHealthcare CEO Brian Thompson's alleged killer is Luigi Nicholas Mangione. The 26-year-old suspect is a graduate of the University of Pennsylvania with the reasons behind his alleged killing have been considered highly controversial.

Mangione, who graduated in computer science and received both a bachelor's and master's degree from the University of Pennsylvania, is said to have committed a premeditated attack. The police found him with a gun with a silencer, four fake IDs, and a manifesto against the health insurance industry, specifically UnitedHealthcare.

Investigators believe that Mangione's anti-capitalist beliefs, coupled with his support for climate change activism, contributed significantly to the crime.

Fox News interviewed Cornell Law professor William Jacobson, who stated that Ivy League schools are more skewed toward leftist ideologies and it might influence the thinking pattern of students. He believed that anti-capitalist and anti-American sentiments are widespread at such institutions.

In fact, a former teacher of Mangione's alma mater faced criticism after initially writing praise for him on the social media platform before the woman retracted her postings.

What Luigi Mangione's Peers Say About His Arrest

Mangione's former high school classmates said they were shocked to hear that he was involved in the crime, describing him as a smart and ambitious young man from a well-off Maryland family.

However, according to law enforcement sources, Mangione had radical views and had shown admiration for some of the most notorious figures, including the Unabomber, in his social media activities, Forbes shared.

Charged with second-degree murder and other offenses, Mangione is being held behind bars as the authorities dig further into his background. The killing has raised many questions in people's minds about how someone who had such an auspicious educational and professional future, while also coming from a wealthy family, could turn to violence.