A person familiar with the matter indicates that Luigi Mangione is expected to plead guilty in a federal case. This case involves the killing of UnitedHealthcare CEO Brian Thompson. Mangione's guilty plea is anticipated to occur as early as Friday, according to the source.

The person spoke on the condition of anonymity and noted that Mangione could change his mind. Further details about the case and the expected plea are available from the source, including the circumstances surrounding the killing of the CEO.