In an eight-hour-long drama, which ended around last midnight, chief proctor Mata Amber Tiwari was locked inside his room by students, who were demanding the withdrawal of the rustication of Students Union president Dinesh Singh Yadav and two of his associates Ajeet Yadav and Avinash Dubey.
Tiwari could be freed only after police dispersed the agitating students by using force and broke open the lock on the door of the chief proctor's office.
Earlier, on Friday, Ajeet Yadav and Avinash Dubey had tried to immolate themselves in front of the V-C office, but were prevented from doing so by police and University officials.
The student union leaders were expelled on February 6 following a February 2 incident, wherein they had barged into the office of the Vice-Chancellor and allegedly assaulted staff members upon being prevented from entering the V-C's chamber without prior appointment.
More From This Section
The union leaders had claimed that they wished to draw the V-C's attention towards "irregularities" in granting admissions to research scholars.
Police was also not able to provide "additional forces" as a large number of personnel were manning the Maha Kumbh congregation.
However, agitations resumed when the University reopened in the third week of February and intensified over the past few days as the varsity authorities refused to reconsider their decision.
Meanwhile, police today said "no complaint has so far been lodged by the University authorities and, hence, no arrests have been made in connection with yesterday's incident".