In a federal case, Luigi Mangione's defense team engaged in discussions about a potential plea deal. According to sources familiar with the matter, these talks took place but ultimately stopped. The specifics of the negotiations are not well understood at this time.

It is unclear what progress was made towards reaching an agreement before the talks ceased. For more information on the case and the negotiations, readers can refer to ABC News sources, which have reported on the developments in the federal case involving Luigi Mangione.