Foreign based Persian language news web sites report that many student movement leaders (14 of them) have been detained by the Iranian regime security forces in the past 48 hours due to the recent announcement made by the students which had invited the people to gather for an anti-regime protest in front of the Tehran university main campus on the national students' day 3 days from now. It appears though that the leaders of the Iranian student movement have been seized while leaving their houses for class yesterday. [+]
I'll keep you posted on this as it develops!
Update: Iranian woman has more on it