Farideh Moradkhani who is a niece of the supreme leader Ayatollah Ali Khamenei after she recorded a widely seen video here

https://www.youtube.com/watch?v=xG0GRB8r8Rs

which describes the authorities led by her uncle as a "murderous and child-killing regime.

Her brother Mahmoud Moradkhani wrote on Twitter that she was arrested on Wednesday after going to the office of the prosecutor following a summons.