Over 200 students of the Jawaharlal Nehru University (JNU) were detained here on Friday while demanding swift action to locate missing fellow student Najeeb Ahmed.
Ahmed went missing on October 15 night from a university hostel after a brawl reportedly with Akhil Bharatiya Vidyarthi Parishad members.
The students were led away by police when they reached the Jantar Mantar protest site in the heart of the capital.
They were taken to the Parliament Street Police Station.
The students kept a steady chant of anti - police slogans while being detained.
The police have set up a Special Investigation Team to trace Ahmed.