A woman student of the Ambedkar University on Wednesday alleged that her classmate passed casteist remarks at her, a police official said.
She, along with her friends, went to the Kashmere Gate police station to lodge a complaint, he said.
Police said they have initiated an inquiry into the matter.
The inquiry is being carried out by an Assistant Commissioner of Police-rank officer, the official said.
Both the parties have been called on Thursday by the police and will be questioned in the matter, he added.