Accused CEO Killer Was 'Into 3D Printing' in College

During his student days at the University of Pennsylvania, Luigi Mangione's hobby was 3D printing, according to a man who knew him then.

"It's funny, I recall him being into 3D printing in sophomore year," Matthew Levy, who lived next door to Mangione's dorm room their freshman year, told the New York Post. "I mean, he was making much more innocent things then."

Police have accused Mangione of using what appeared to be a 3D-printed ghost gun in last week's assassination of UnitedHealthcare CEO Brian Thompson in New York City.

Mangione, 26, allegedly lay in wait for Thompson outside the CEO's hotel in Midtown Manhattan and shot him multiple times before fleeing on foot, riding a bicycle into Central Park, and ultimately making his way to a bus station in northern Manhattan, where police believe he left the city by bus.

After a five-day manhunt, Mangione was spotted at a McDonald's in Altoona, Pennsylvania, Monday and police said that a gun, clothing, and fake IDs found in his possession all closely match those used by the shooter.

As he entered a Pennsylvania courthouse under heavy police presence for a hearing on Tuesday, Mangione shouted towards reporters, in part, "completely out of touch and an insult to the intelligence of the American people!" It was unclear to what he was referring.

He was arraigned in Altoona on Monday on gun and forgery charges and an arrest warrant filed on Tuesday in Manhattan criminal court listed one count of second-degree murder, three counts of criminal possession of a weapon, and one count of criminal possession of a forged instrument.

At the Tuesday hearing, Mangione's defense lawyer said his client intends to fight extradition from Pennsylvania to New York. A judge also denied Mangione bail for the second time during Tuesday's proceedings.

Information from Thomson/Reuters was used in this report.

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