Scores of students held a protest outside the office of Delhi University's vice-chancellor on Monday demanding immediate reopening of the campus, days after the Delhi Disaster Management Authority gave its nod to resumption of offline teaching in the capital. The students hung an ''Out of Service'' placard on the gate of the VC office. The demonstration was organised by the Students' Federation of India (SFI). The SFI said over 400 students took part in the "gherao".