The 28-year-old entered the plea at a hastily scheduled hearing, setting off a legal fight over whether he can still be tried on murder charges.

Luigi Mangione is separately charged in New York state court with murdering UnitedHealthcare CEO Brian Thompson in December 2024.

Luigi Mangione is expected to plead guilty as early as Friday in the federal case accusing him of stalking and killing UnitedHealthcare CEO Brian Thompson, a stunning development…

Mangione faces two charges of stalking resulting in death in federal court

Luigi Mangione plans to plead guilty in the federal case concerning Brian Thompson's death. This plea could avert a federal trial and potentially dismiss state murder charges.…