Iran's most celebrated living poetess Simin Behbahani faced a travel ban on Monday after being prevented from leaving for France for International Women's Day ceremonies, an opposition website said.
French authorities slammed the ban as an "unacceptable new violation of human rights", while hailing Behbahani's bravery and saying it had been looking forward to seeing her.
The 82-year-old poet is also a feminist advocating better rights for Iranian women who face several inequalities under the Sharia-based law in place in the Islamic republic since its 1979 revolution.
Officials confiscated Behbahani's passport at Tehran's Imam Khomeini airport Monday as she was set to leave and told her to follow up the matter through the revolutionary court, Keleme.com said.
"Paris municipality had invited me for March 8 and I had prepared a text about feminism and a poem about women which I was going to read at the ceremony and return on Wednesday," Behbahani was quoted as saying.
"After I crossed customs and my passport was stamped, two officials called me, took my passport away, kept me till 5:00 am (0130 GMT) and asked questions," she said.
The octogenarian poet is close to Iran's Nobel peace prize winner and human rights campaigner Shirin Ebadi -- both condemning the Islamic republic's treatment of women as discriminatory.
The French foreign ministry hailed the courage of a "major figure of Persian contemporary poetry" whose attitude "mirrors that of many Iranians who in spite of repression fight peacefully for their fundamental rights".