He felt shooting a CEO was better than trying to set off a bomb because he didn’t want to hurt anyone he felt didn’t deserve it,” a police source said.

The 3D-printed gun found on the suspect in last week's killing of United Healthcare CEO Brian Thompson matches shell casings found at the site of the shooting, NYPD Commissioner Jessica Tisch said Wednesday.

Police in New York said Wednesday that forensic investigators were able to match the gun Luigi Mangione was carrying when he was arrested in Pennsylvania to bullet casings found at the scene of the Dec. 4 killing of UnitedHealthcare CEO Brian Thompson in midtown Manhattan.