Three students of the IIT, Madras, in Chennai have been expelled from the hostel for a year and barred from contesting in students' council elections for alleged misbehaviour with their juniors.
The action last week followed an inquiry by the authorities found the complaint of misbehaviour to be true, college authorities said.
The three were asked to leave the hostel for one year and find accommodation outside the campus; the sources said adding the hostel authorities had been asked not to allow them inside the hostel during this period.
They have also been barred from contesting for positions in the students' council and other bodies, they said.
Hostel students have also been advised against entertaining the expelled students and allowing them inside. They have been warned of disciplinary action if they were found violating the instructions.
They have also instructed that seniors-juniors interaction should happen only in the common room in the presence of wardens and coordinators during the roll call in the evening and seniors should not summon the juniors to their rooms.
Action would be taken against those who violate this, they said.