The Central Vigilance Commission had received complaints against registrar Surajit Panigrahi for sexual advances to a girl seeking employment as a stenographer.
"There were allegations of sexual crime against him. Since the charges were serious in nature we had suggested the governing council of the institute to suspend him and now he has been suspended," B K Shukla, chief vigilance officer in the Department of Science and Technology (DST) told PTI from Delhi.
"The decisions are taken by the governing council of the institute. All I can say is that somebody else has been appointed in his place," he said.
The registrar could not be contacted despite repeated attempts.
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Biologist and senior professor of the institute Sampa Das has been appointed as the new registrar, officials said.
Shukla informed that the CVC will now begin investigating the charges against Panigrahi.
DST had taken up the issue after a complaint against Panigrahi had been lodged by city-based NGO India's Smile.