Raids were also carried out at the premises of recruitment committee members and also against five selected teachers in Sagar, Kanpur, Nagpur and Karnal, a CBI official said.
CBI SP, Manish Shroti told PTI that on the basis of various complaints received, three cases were registered and after getting a warrant, raids were carried out at Gajbhiye's Kanpur residence, university premises at Sagar, Karnal (Haryana) and nine other places.
Six CBI teams in Sagar examined documents related to the five selected teachers and selection committee.
The CBI also seized a large number of documents related to alleged irregularities in recruitments.
However, the CBI has not made any arrests so far.