Gun found on suspect in killing of UnitedHealthcare CEO matches shell casings at scene, police say

ALTOONA, Pa. — The gun found on the suspect in the killing of United Healthcare’s CEO matched shell casings found at the site of the shooting, New York City’s police commissioner said Wednesday.

Suspect Luigi Mangione’s fingerprints also matched a water bottle and a snack bar wrapper that police found near the scene in midtown Manhattan, Commissioner Jessica Tisch said at an unrelated news conference. Police had said earlier that they believed the gunman bought the items at a nearby coffee shop while awaiting his target.

Mangione, 26, was charged with murder in last week’s shooting of Brian Thompson, who led the United States’ largest medical insurance company.

Authorities have said that writings found in Mangione’s possession hinted at a hatred of corporate greed.

They’ve recovered a spiral notebook that Mangione kept, along with a three-page, handwritten letter found when he was arrested Monday in Pennsylvania, a law enforcement official said Wednesday. Police have not disclosed what was in the notebook.

The letter teased the possibility that clues to the attack — “some straggling notes and To Do lists that illuminate the gist of it” — could be found in the notebook, the law enforcement official said. The official wasn’t authorized to disclose information about the investigation and spoke to The Associated Press on condition of anonymity.

The New York Police Department’s top detective, Joseph Kenny, told CBS New York on Tuesday that the motive might have been related to an accident that sent Mangione to an emergency room on July 4, 2023.

A law enforcement bulletin obtained by the AP earlier this week said the letter disdained corporate greed and what Mangione called “parasitic” health insurance companies. The prep school and Ivy League graduate wrote that…