Iranian security forces released Mahsa Amini's father on Saturday after briefly detaining and warning him against marking the anniversary of her death, a human rights group said.
A source close to the family confirmed a report by the Norway-based human rights group Hengaw that Amjad Amini was arrested as he was leaving his house in western Iran.
Mahsa Amini's death in police custody a year ago unleashed months of anti-government protests that spiralled into the biggest show of opposition to the authorities in years.
Iranian officials were not immediately reachable by Reuters for comment.


Indonesia's Semeru volcano erupts, alert level raised to highest
19 killed and 66 wounded in heavy Russian attack on Ukraine
Elon Musk, Ronaldo attend Trump's dinner for Saudi Crown Prince
Louvre museum to add 100 external cameras by 2026 after heist
Japan's biggest fire in nearly 50 years ravages 170 buildings, kills one