Moments after Luigi Mangione was put in handcuffs at a Pennsylvania McDonald’s, a police officer searching his backpack found a loaded gun magazine wrapped in a pair of underwear.

The discovery, recounted in court Monday as Mangione fights to exclude evidence from his New York murder case, convinced police in Altoona, Pennsylvania, that he was the man wanted for killing UnitedHealthcare CEO Brian Thompson in Manhattan five days earlier.

What You Need To Know

Luigi Mangione returned to court Monday for a pretrial hearing. He is fighting to exclude evidence from his New York murder case

Mangione, 27, has pleaded not guilty to state and federal murder charges

The hearing, which began Dec. 1 and was postponed Friday because of his apparent illness, applies only to the state case

“It's hi

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