The person of interest in the assassination of UnitedHealthcare CEO Brian Thompson apparently gave a positive review of the Unabomber’s manifesto online earlier this year, praising the killer as a “political revolutionary.”

Police on Monday called Luigi Mangione a “strong person of interest” after taking him into custody in connection with the murder.

An account under that name on the book review website Goodreads, which also matches photos of the suspect on other social media platforms, revealed Ted Kaczynskireceived a four-star review in January.

“Clearly written by a math prodigy. “Reads like a series of lemmas on the question of quality of life in the 21st century,” the review says.

“It is easy to quickly and thoughtlessly dismiss this as the manifesto of a madman in order to avoid confronting some of the unpleasant issues it identifies. But it is simply impossible to ignore how prescient many of his predictions about modern society were,” the review continues.

“He was a violent individual – lawfully imprisoned – who mutilated innocent people. While these actions tend to be characterized as those of a crazy idiot, they are more accurately viewed as those of an extreme political revolutionary,” the review of an account under Mangione’s name continued.

Thompson, 50, was shot outside a Manhattan hotel early Wednesday morning by a masked man who fled on a bicycle.

Police received a key clue to the killer’s motives after it was revealed that the words “deny,” “depose” and “defend” were engraved on the live cartridges and shell casings found outside the Hilton Hotel on Sixth Avenue in Midtown Manhattan, where the shooting occurred, were found.

Mangione was arrested in Altoona, Pennsylvania, after he was spotted at a McDonald’s by someone who believed he resembled the shooter, officials said at a news conference.

He was found with a gun and a silencer that matched the gun used to shoot Thompson, New York City Police Commissioner Jessica Tisch said.

He also had several fake IDs and a handwritten document that reflected “both his motivation and his mindset,” Tisch said.

Police are likely searching Mangione’s social media accounts. The former University of Pennsylvania student had accounts on X, LinkedIn and Instagram.

On Goodreads, Mangione appears to have published about 65 reviews of books on politics, popular science, health, and exercise. Among his most recent reviews, published in January this year, was that of George Orwell 1984two travel guides to Hawaii, two books on computer programming and Dr. Seuss Lorax.

Last year he published a series of reviews of back pain books, including Kaczynski’s Industrial society and its future, the 35,000 word manifesto he sent to the Washington Post with a promise to end his 1978-1995 letter bombing campaign if the newspaper published it.

Mangione did not leave written reviews for all the books, sometimes only giving them a star rating.

He appears to have read a number of books about Elon Musk and the autobiography of Jackass star Steve-O. Professional Idiot: A Memoir.