Iran warned Italy on Friday that it risked harming good bilateral relations if it bows to the "political and hostile goals" of the United States by detaining an Iranian engineer on a U.S. warrant in connection with a drone attack in Jordan last year that killed three American troops.

The fate of an Italian journalist detained in Tehran and an Iranian engineer imprisoned in Italy on a U.S. warrant grew even more intertwined Friday as the Iranian awaits possible extradition to the United States to face charges he provided drone technology to Iran's elite Revolutionary Guard corps.