In a federal case, Luigi Mangione's defense team engaged in discussions about a potential plea deal. According to sources who spoke to ABC News, these talks took place but ultimately stopped. The details of the negotiations are not entirely clear, including how close the parties came to reaching an agreement.

It is known that the discussions did occur, but the outcome and current status are not well defined. For more information on this case and the plea deal discussions, readers can refer to the original report from ABC News sources. Further details may be available from this source.