Strong person of interest’ Luigi Mangione taken into custody at Pennsylvania McDonald’s.

Here’s what we know so far.

At a press conference Monday afternoon in Manhattan, New York Mayor Eric Adams, New York Police Commissioner Jessica Tisch and NYPD Chief of Detectives Joseph Kenny provided details about 26-year-old Luigi Mangione, who they described as a “strong person of interest” in last week’s killing of UnitedHealthcare CEO Brian Thompson.

Mangione was detained by Altoona, Pa., police at a McDonald’s restaurant roughly 300 miles west of New York City at approximately 9:15 a.m.

An employee at the fast food chain recognized Mangione from photos released by New York police and contacted local law enforcement,

Tisch said. Kenny added later that Mangione “was sitting there eating” when police approached. They found several items that they believe link him with the fatal shooting in Manhattan, including a ghost gun consistent with the weapon seen in video footage of the crime, a silencer, a fake New Jersey ID that matched the one used when the suspect checked in to a Manhattan hostel, a U.S. passport with his real name, a handwritten document or manifesto that police say speaks to Mangione’s motivation and mindset, and clothing, including a mask, that match those worn by the suspect.

Kelly said that, based on the document found in Mangione’s possession, it appeared that he “has some ill will toward corporate America.”On Friday, after nearly two days of a frantic manhunt that played out on the streets of Manhattan, New York police said they believed that the suspect in the case fled the city by bus.

NYC mayor says requiring people to pull masks down temporarily would help in cases like these

New York City Mayor Eric Adams said a policy that requires people to even temporarily pull down their masks when entering a business, cab or ride share vehicle would help “close these cases in hours,” he said referring to the apprehension of Luigi Mangione.

“We had a ban in place and it was removed after COVID,” Adams told reporters. “I think we need to reexamine having that put back in place, and I know the governor has voiced some interest in it, and I think that what we saw here, maybe this would give wind in the sail to bring this home.”

What to know about ‘ghost guns’

The NYPD said that Luigi Mangione, the “strong person of interest” in the UnitedHealthcare CEO killing who was arrested Monday on firearms charges in Altoona, Pa., had what investigators believe was a so-called ghost gun.

Ghost guns are firearms that are often assembled with kits that can be bought online or at a store without a background check. They also do not contain serial numbers, making them virtually impossible for law enforcement to trace or regulate.

President Biden’s administration has tried to crack down on such weapons. In October, the U.S. Supreme Court heard arguments over their legality and seems poised to uphold a 2022 rule issued by the Bureau of Alcohol, Tobacco, Firearms and Explosives to regulate parts and kits used to make so-called ghost guns like any other firearm.