New York (CNN) — Luigi Mangione, the 27-year-old accused of killing a health insurance company executive in a brazen attack that sparked a national debate, is appearing in court Monday as his attorneys seek to have his diary entries and other key evidence tossed from his state murder case.

He entered the courtroom through a side door Monday morning with his hands shackled, wearing a dark gray suit jacket and a white checkered button-down shirt. A court officer unshackled his hands as he reached the defense table.

Mangione was arrested at a McDonald’s in Pennsylvania following a days-long manhunt after United Healthcare CEO Brian Thompson, 50, was fatally shot December 4, 2024, on a busy sidewalk in midtown Manhattan.

During the arrest, law enforcement recovered several pieces of ev

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