Italian journalist Cecilia Sala has arrived back in the country’s capital after being freed from an Iranian prison where she had spent weeks in detention.

Iran likely held Cecilia Sala as a bargaining chip after an Iranian businesses was arrested in Italy on a U.S. warrant.

An Italian journalist detained in Iran for three weeks has been freed and has returned home, after her fate had become intertwined with that of an Iranian engineer arrested in Italy and wanted by the United States.