Italy's justice minister intervened to release an Iranian man, Mohammad Abedini Najafabadi, who was arrested in Milan last month.
The U.S. sought his extradition for allegedly supplying materials used in a drone attack that tragically killed three American soldiers.
Italy's decision, announced Sunday, cited insufficient grounds for extradition, claiming the relevant crime isn't punishable under Italian law.
This action followed Iran's recent release of an Italian journalist, possibly indicating a complex diplomatic exchange between the nations.