Sept. 16 marks the second year since Mahsa Amini's death in custody of Iran's hijab implementing police, which left the country engulfed in the largest-ever nationwide unrest, shaking the very foundation of the ruling theocratic establishment. 

On Thursday her father, Amjad Amini, issued an audio statement online saying the family, and those of other victims of the state crackdown, "have the right" to mourn their loved ones in traditional and religious gatherings. But he expressed doubt that security officials will ever authorize any such ceremonies. 

In the run-up to the anniversary, a number of civil society activists and members of the families of those killed in the unrest have been rounded up by Iran's intelligence apparatus, opposition outlets reported on Friday. Security forces have also tightened measures in Mahsa's Kurdish hometown of Saqqez, setting up checkpoints in and around the city with a palpable police presence, and businesses have received warnings against any strike action. 

A similar pattern was in place ahead of the first anniversary last year, when the Amini family was denied permits to mark her death and was effectively placed under house arrest amid the Iranian government's fears about renewed demonstrations.