The students were later released.
Twelve students, including two girls, were arrested when they were protesting against the Kamduni gangrape and murder in the Metro Channel area.
The administration recently banned rallies and demonstrations in the area.
According to senior police officials, when the students were asked to leave the area, they smeared police officials with colours.
"Twelve students were arrested for staging the rally in a prohibited zone and smearing police officials with colours. All of them were released on bail," Joint CP(headquaters) Jawed Shamim told PTI.