Luigi Mangione‘s fingerprints match those found on a KIND snack bar and a water bottle near the scene of the Manhattan shooting of UnitedHealthcare’s CEO, according to New York police.

Investigators are still trying to match Mangione’s prints to those found on the gun used in the fatal shooting of Brian Thompson, which was found on the suspected killer when he was arrested Monday in Pennsylvania. The three shell casings found at the scene match the gun, which was sent from Pennsylvania to the NYPD’s crime lab, NYPD Commissioner Jessica Tisch said Wednesday.

Mangione purchased the KIND bar, bottle of water and a coffee from a Starbucks in Midtown just minutes before he allegedly gunned down the father of two as he walked to an investor’s conference at a Hilton hotel last Wednesday, sources have said.

New York City police officers discovered the snack bar, which was found in a nearby alleyway, and water bottle and submitted them as evidence as they investigated the murder, sources said.

Five days later, Mangione was finally busted at an Altoona, Pennsylvania, McDonald’s.

He was in possession of the 3-D printed gun with a silencer, several fake IDs and a manifesto in which he raged against the healthcare industry when a rookie cop took him into custody.

What we know about the shooting of UnitedHealthcare CEO Brian Thompson

• Brian Thompson, the CEO of insurance giant UnitedHealthcare, was gunned down Wednesday outside a luxury Midtown hotel in a “brazen, targeted attack,” police said.
• Thompson was named CEO of UnitedHealth in April 2021. He joined the company in 2004. He was one of several senior executives at the company under investigation by the Department of Justice.
• Thompson’s wife, Paulette, said her husband had been getting threats before he was killed.
• Thompson’s shooting led to sick support online, and even spurred a tasteless lookalike competition in NYC.
• A person of interest has been nabbed by police officers inside a McDonald’s in Altoona, Pa.
• The suspect has been identified as Luigi Mangione, 26, originally from Towson, Md. He’s an Ivy League graduate who hated the medical community.

Follow along with The Post’s live updates on the news surrounding Brian Thompson’s murder.

He’s being held in Pennsylvania as he contests his extradition back to New York, where he’s charged with second-degree murder.

Mangione is also charged with weapons and forgery charges in Pennsylvania.

Mangione’s defense attorney, Thomas Dickey, denied the UPenn graduate’s involvement in the Manhattan slaying and said he is expected to plead not guilty to the murder charge.