The man charged in the killing of UnitedHealthcare CEO Brian Thompson was critical of U.S. health care. Experts say the system's problems are complex and can't be pinned on one player or industry.
Police say the suspect had a ghost gun, possibly made with a 3D printer, when he was arrested on Monday. Here's what to know about the increasingly widespread weapons and efforts to regulate them.
Luigi Mangione, 26, was arrested and charged with murder on Monday. He was found at a McDonald's in Pennsylvania, but is expected to be extradited to New York.
Mangione was arraigned on firearms and forgery charges in Pennsylvania after his arrest Monday evening, and is expected to face charges in New York as well.
Key pieces of evidence include the shooter's electric bike, bullet casings found at the scene and the hostel where the suspect reportedly stayed. Police are also analyzing a phone found in an alley.
Shell casings with the cryptic words "deny," "defend" and "depose" were found at the scene of the fatal shooting of the UnitedHealthcare CEO outside of a Manhattan hotel, police officials say.