It was alleged that a girl student made a video of other girls taking bath in the hostel, which later went viral on social media.
Police said that during investigation it has come to light that a hostel student had shared her video with a youth from Himachal Pradesh, whose role is under investigation.
The protesters claimed that some girl students living in the hostel attempted suicide following a 'leaked video' rumour.
The main accused in this case is also a student living in a hostel on the campus. Police said that he has been arrested.
AAP national convener Arvind Kejriwal tweeted on Sunday that the culprits will get "severe punishment".
Meanwhile, Punjab CM has ordered an inquiry and expressed displeasure over the incident and said that strict action will be taken against those found guilty.