Investigators have not uncovered any evidence that Luigi Mangione was insured through UnitedHealthcare, with sources saying the fatal hit was not personal and that the alleged assassin was

Fingerprints recovered from the scene of UnitedHealthcare CEO Brian Thompson 's killing in New York City match those of murder suspect Luigi Mangione, a law enforcement source tells PEOPLE. Shell casings found at the site of the shooting match Luigi’s fingerprints. Along with a water bottle, and a KIND bar near the scene, the source said.