"DU's School of Open Learning has suspended five people on the suspicion that they entered a confidential domain and accessed documents which were leaked," University sources said.
Those suspended are a Section Officer and four officials below him in hierarchy. An inquiry has been initiated against them, they said.
Sources said the officials have admitted to SOL's Director Chandra Shekhar Dubey to leaking the documents.
Irani is at the centre of a raging controversy over her educational qualification after it emerged that she had made contradictory declarations when she contested Lok Sabha elections in 2004 and 2014.