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, will appear in court Monday as his attorneys seek to have his diary entries and other key evidence tossed from his state murder case.

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 evidence from Mangione’s backpack that authorities say tie him to the killing. Mangione’s lawyers argue police illegally searched his bag without a warrant, so that evidence should be barred from the state’s case. Prosecutors denied

See Full Page