Hengameh Ghaziani and Katayoun Riahi were both detained after being summoned by prosecutors in a probe into their "provocative" social media posts and media activity, the state-run IRNA news agency said.The video, which appears to have been filmed in a shopping street, shows Ghaziani bareheaded facing the camera without speaking and then turning around and binding her hair into a ponytail.The actor, 60, who has appeared in a string of award-winning movies and is also known for her charitable work, had in September given an interview to London-based Iran International TV, an outlet despised by the regime, without wearing a hijab.They also included Yahya Golmohammadi, coach of Tehran football team Persepolis FC, who had strongly criticised players on Iran's national squad for not "bringing the voice of oppressed people to the ears of the authorities".The comment came after the national football team last week met President Ebrahim Raisi ahead of their appearance at the World Cup, which began Sunday in Qatar."