The notice accused the three of initiating "illegal measures" and issuing "threats" against Gupta, and sought an unequivocal apology to the college's senior accounting officer.
According to an EC member, the High Court had instructed the AUD to conduct admission to CoA as part of the varsity on May 17 and had allowed DU two weeks to file an appeal.
Shubham, a class IX student at Gurukul Mahavidyalaya in Jhajjar, Haryana, was kept in a room and attacked by his teacher on April 29.