Luigi Mangione plans to plead not guilty

FOX spoke with Mangione's attorney who says he plans to plead not guilty... Meanwhile, investigators are looking into whether Mangione had denied insurance claims from UnitedHealthcare.

CEO shooting suspect shouts as he appears in court

Luigi Mangione, the man suspected in the targeted killing of UnitedHealthcare CEO Brian Thompson, shouted to a crowd of media members as he entered court in Pennsylvania on Tuesday for an extradition hearing.

Person of interest arrested in UnitedHealthcare CEO murder

Police arrested a suspect Monday in the brazen Manhattan killing of UnitedHealthcare's CEO after a quick-thinking McDonald’s employee in Pennsylvania alerted authorities to a customer who was found with a weapon, mask and writings linking him to the ambush.