Fariba Adelkhah, a French-Iranian academic, has returned to France after being held for four-and-a-half years in Iran in a case that added to tensions between Paris and Tehran.
Ms Adelkhah was arrested in June 2019 and convicted on national security charges that her supporters denounced as absurd.
Although she was released from prison in February, she remained unable to leave Iran.
A well-known researcher in Iranian Shiite religion and politics, Ms Adelkhah landed back in Paris on Tuesday, her employer Sciences Po University said. They had set up a support group to secure her release.
“After so many years of being deprived of her freedom, what an emotion to finally welcome home our colleague Fariba, a symbol of our battle for academic freedom,” said university director Mathias Vicherat.
Ms Adelkhah was one of some two dozen foreign nationals held by Tehran in what activists and western governments have described as a deliberate strategy of hostage-taking aimed at extracting concessions from the West.
France's Eiffel Tower lit up to support Iran's activists – in pictures
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Protesters holds Iran's former flag on the Trocadero Esplanade Trocadero Esplanade during an event to display the slogan "Woman. Life. Freedom. " on the Eiffel Tower, in a show of support to the Iranian people, in the wake of the death of young Iranian woman Masha Amini who died in the country's morality police custody, in Paris, on January 16, 2023. AFP -
The Eiffel Tower lits the night with the a slogans "Woman, Life, Freedom" and "Stop Executions in Iran in support for the protests across Iran in Paris, Monday, January 16, 2023. AP -
The Eiffel Tower lits the night with the a slogans "Stop Executions in Iran" and "Woman, Life, Freedom" in support for the protests across Iran in Paris, Monday, January 16, 2023. AP -
Iran's former flag flies next to the Eiffel Tower displaying the slogan #StopExecutionsInIran in support of the Iranian people, in Paris, France, 16 January 2023. EPA -
The Eiffel Tower displays the words 'Woman, Life, Freedom' in support of the Iranian people, in Paris, France, 16 January 2023. EPA -
A protester holds a sign reading 'condemned for loving' during a display of the words '#StopExecutionsInIran' on the Eiffel Tower in Paris, France, 16 January 2023. EPA -
A woman holds a sign reading 'Woman, Life, Freedom' prior to a display of the words 'Woman, Life, Freedom' on the Eiffel Tower in Paris, France, 16 January 2023. EPA -
The Eiffel Tower displays the words 'Woman, Life, Freedom' in support of the Iranian people, in Paris, France, 16 January 2023. EPA -
The Eiffel Tower displays the words 'Woman, Life, Freedom' in support of the Iranian people, in Paris, France, 16 January 2023. EPA -
The Eiffel Tower lits the night with the a slogans "Stop Executions in Iran" and "Woman, Life, Freedom" in support for the protests across Iran in Paris, Monday, January 16, 2023. AP -
The Eiffel Tower lits the night with the a slogans "Woman, Life, Freedom" and "Stop Executions in Iran in support for the protests across Iran in Paris, Monday, January 16, 2023, as a Iranian flag flies next. AP -
A protester holds a slogan reading in French " Stop the executions in Iran" during a gathering to display the slogan "Woman. Life. Freedom. " on the Eiffel Tower, in a show of support to the Iranian people, in the wake of the death of young Iranian woman Masha Amini who died in the country's morality police custody, in Paris, on January 16, 2023. AFP
Several foreign prisoners in Iran have been released in recent months, including five Americans freed in a complex exchange for billions of dollars in Iranian funds that had been frozen in a South Korean account.
In May, Iran freed French prisoners Benjamin Briere and Bernard Phelan, the latter also an Irish national, after their health deteriorated during hunger strikes.
But about a dozen foreigners remain held by Iran including four French citizens: teacher Cecile Kohler and her partner Jacques Paris, Louis Arnaud, described by his family as an innocent traveller, and a man identified only as Olivier.
In a call with Iranian President Ebrahim Raisi at the weekend to discuss the current conflict between Hamas and Israel, French President Emmanuel Macron “reiterated his deep concern” over the detainees and requested their immediate release.
“I think of my former fellow women prisoners at Evin (prison in Tehran) and my French compatriots, Cecile, Jacques, Louis and Olivier, who have not yet regained their freedom,” Ma Adelkhah said in a statement released through her supporters.
She was arrested in June 2019 along with her French colleague and partner Roland Marchal.
Mr Marchal was released in March 2020 in an apparent prisoner swap after France released Iranian engineer Jallal Rohollahnejad, who faced extradition to the US over accusations he had violated sanctions against Iran.
Ms Adelkhah was sentenced in May 2020 to five years in prison for conspiring against national security.
She was allowed home in Tehran in October 2020 with an electronic bracelet but was then returned to jail in January 2022.
