Luigi Mangione, CEO of UnitedHealthcare, praised the Unabomber as a "revolutionary" figure.

• In Pennsylvania, Luigi Mangione was detained as a "key suspect" in the murder of UnitedHealthcare CEO Brian Thompson.
• Mangione, 26, is a private-school valedictorian and an Ivy League graduate.
• His social media presence includes a Goodreads profile, where he describes "Unabomber" Ted Kaczynski's actions as those of an extreme political revolutionary.

A private-school valedictorian and tech whiz who used social media to criticize society is being considered a "strong person of interest" in the fatal shooting of UnitedHealthCare CEO Brian Thompson.

Luigi Mangione, a 26-year-old resident of Towson, Maryland, manages multiple social media accounts, including a Goodreads profile where he gave a four-out-of-five-star review to "Unabomber" Ted Kaczynski's anti-technology manifesto.

Mangione wrote that Kaczynski, although a "violent individual" and "rightfully imprisoned," should be viewed as an "extreme political revolutionary" whose actions are more accurately understood in this context.

During his criminal career, Kaczynski was responsible for the deaths of three individuals and the injury of 23 others through the use of letter bombs.

Mangione's review contained unattributed quotes that justified violence against corporations and their leaders, stating, "In instances where all other means of communication fall short, violence becomes necessary for survival."

On Monday morning in Altoona, Pennsylvania, Mangione was arrested while in possession of a three-page, handwritten manifesto.

On the same day, he was discovered with a gun and a silencer that looked like the ones used to shoot the 50-year-old Thompson at close range on a Manhattan sidewalk.

A LinkedIn profile that appears to be Mangione's indicates that he obtained a Master's of Science in computer and information science from the University of Pennsylvania in 2020.

Mangione was valedictorian of his high school class at the Gilman School, a private all-boys school in Baltimore, Maryland, where tuition for ninth grade and above is over $37,000.

In a 2016 post, Gilman cited Mangione's graduation speech, where he commended his class for their "courage to venture into the unknown and take on new challenges."

On Monday, Henry Smyth, the head of school at Gilman, confirmed that Mangione was a former student.

The news is deeply distressing and adds to the already awful situation. Our hearts go out to all those affected, Smyth wrote in a letter to the school, as reported by NBC News.

TrueCar data engineer Mangione resides in Honolulu, Hawaii.

On Monday, a TrueCar spokesperson informed CNBC that Mangione has not been associated with the company since 2023.

Mangione teaches artificial intelligence to high school students through a Stanford University program, founded a "video game development club" at the University of Pennsylvania, and interned at the game development team behind "Civilization VI."

Since June, Mangione has not posted on X, which was previously Twitter.

Mangione's X posts have showcased a range of opinions on technology, politics, and culture, with some aligning with emerging populist conservative ideologies.

"He wrote in an April post that nature abhors a vacuum, stating this in an article titled, "Christianity's decline has unleashed terrible new gods.""

In a previous post, he contended that the modern Japanese urban environment presents an evolutionary mismatch for humans.

In a May 15 post, he acknowledged that Tucker Carlson was correct in identifying how modern architecture harms the soul.

This is developing news. Please check back for updates.