"Azar Mansouri, Ebrahim Asgharzadeh and Mohsen Aminzadeh have been arrested by security organizations and judicial bodies," Fars wrote on Sunday evening.
The charges include attempts to threaten the country's unity and to question Iran's constitution, according to the regime's news agency. The regime's accusations also include propaganda and secret subversive activities.
On Saturday, reports emerged that activist Ghorban Behzadian-Nejad had been arrested after he supported a reform-minded, regime-critical statement.
There is no independent or confirmed information on how many people have been arrested following the regime's brutal, deadly crackdown on protesters in Iran.
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