A group of Iranian students are reported to have been arrested following a rare show of opposition to government policies.
The arrests, of up to 70 students, followed a protest at the prestigious Amir Kabir university in Tehran, BBC reported.
Some of them are angry at moves to re-bury war dead from the Iran-Iraq War in the grounds of the university.
A group of students carried banners, complaining that their campus was being turned into a cemetery.
The students also said the Evin prison in Tehran was being turned into a university - because of the number of students being held there.
During the re-burial ceremony, witnesses said there were clashes between the protesting students, members of the security forces and other students loyal to the government.
This kind of protest has become increasingly rare since President Mahmoud Ahmadinejad took power, because of the harsh response of the authorities to public displays of dissent.
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