In Mashhad, Iranian security forces reportedly stormed a campus of Azad University as part of a broader crackdown on student protests, seizing entrances and detaining multiple students.
The action comes amid a new wave of anti-government demonstrations by university students in cities including Tehran and Mashhad at the start of the academic term.
Protesters have called for justice for those killed and denounced the regime, with clashes reported between security personnel and students as tensions escalate.
Iranian authorities have stepped up security measures on campuses to quell unrest.