Moments following the arrest of Luigi Mangione at a McDonald’s in Pennsylvania, a police officer discovered a loaded gun magazine concealed in a pair of underwear inside his backpack. This finding, presented in court during Mangione’s legal battle to exclude evidence in his New York murder case, led Altoona police to believe he was the individual sought for the murder of UnitedHealthcare CEO Brian Thompson in Manhattan five days earlier.
During the arrest on December 9, 2024, body-worn camera footage captured an officer identifying Mangione and confirming his identity with strong language upon uncovering the magazine. Christy Wasser, a seasoned Altoona police officer, testified during a pretrial hearing that Mangione is seeking to prevent prosecutors from using the magazine, a 9 mm handgun, and a notebook discovered in the subsequent search of his bag.
Mangione’s defense argues that the items should be excluded due to the absence of a search warrant and insufficient grounds for a warrantless search. Prosecutors counter that the search was lawful and that a warrant was eventually obtained. Wasser explained that Altoona police procedures mandate a prompt search of a suspect’s belongings at the time of arrest, particularly for hazardous items.
Despite concerns about potential dangers, including bombs, Wasser admitted during her testimony that the McDonald’s was not evacuated of customers or staff. Mangione, aged 27, maintains his plea of not guilty to state and federal murder charges and appeared healthy during the proceedings, interacting with his legal team and photographers.
The ongoing hearing pertains solely to the state case, with a similar effort by Mangione’s lawyers to exclude evidence in his federal case, where prosecutors are pursuing the death penalty. Prosecutors claim that the handgun found in Mangione’s backpack matches the weapon used in Thompson’s murder and that entries in the notebook reveal his animosity towards health insurers and contemplation of targeting a CEO at an investor conference.
Thompson, aged 50, was fatally shot while en route to a Manhattan hotel for an investor conference on December 4, 2024. Surveillance footage captured a masked assailant shooting him from behind, with inscriptions on the ammunition referencing tactics used by insurers to avoid claims. Mangione was apprehended in Altoona, approximately 370 kilometers west of Manhattan, following a tip-off about a McDonald’s patron resembling the suspect.
Wasser mentioned she had seen news coverage of Thompson’s killing on Fox News before responding to the McDonald’s call. The search of Mangione’s bag initiated during his arrest on initial charges of forgery and false identification revealed alarming items, including the handgun and silencer. Subsequent searches at the police station uncovered the notebook.
A Blair County prosecutor testified that a judge approved a search warrant for Mangione’s bag after the initial searches were conducted, enabling Altoona police to transfer the evidence to New York City detectives handling Thompson’s murder investigation. Prosecutors described Thompson’s killing as an “execution” and labeled the notebook as a “manifesto,” which Mangione’s defense argued were prejudicial terms.
During the legal proceedings, Judge Gregory Carro dismissed the impact of such language but cautioned the prosecutor against using it during the trial in the presence of jurors.