A guilty plea was entered by Luigi Mangione to federal stalking charges related to the death of UnitedHealthcare CEO Brian Thompson. Mangione is also facing state murder charges, with a trial scheduled for September 8. The case involves the shooting of Thompson outside a New York City hotel.

Further details about the events surrounding the case are available from KSAT 12. Mangione's arrest occurred in Pennsylvania, and a timeline of key events in the case has been reported, including his arrival in New York City and subsequent actions. For more information on the case and its developments, readers can refer to the source.