As the first anniversary of UnitedHealthcare CEO Brian Thompson’s killing looms this week, the man charged in his death will be in court fighting to prevent prosecutors from using evidence they say links him to the crime.

Luigi Mangione, 27, is set for hearings starting Monday on his bid to block the Manhattan District Attorney's Office from showing or telling jurors about items seized during his arrest at a yet-unscheduled state murder trial.

Those items include a 9 mm handgun that prosecutors say matches the one used in the Dec. 4, 2024, killing and a notebook in which they say he described his intent to “wack” a health insurance executive.

After getting state terrorism charges thrown out in September, Mangione's lawyers are now zeroing in on what they say was unconstitutional conduct

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