CBI sources said the agency has registered two FIRs on the basis of referral while in one case a Preliminary Enquiry has been registered.
They said four referrals are in various stages of considerations at the agency.
The sources said the cases were referred on the basis of Shunglu panel observations which had pointed out these alleged irregularities in the functioning of the Delhi government.
The agency had recently registered a case into the appointment of Nikunj Aggarwal as OSD to Health Minister Satyendra Jain, besides alleged irregularities in the functioning of Delhi Wakf Board.
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Jung had formed a three-member committee chaired by former Comptroller and Auditor General V K Shunglu on August 30, 2016, whose other members were ex-chief election commissioner N Gopalaswami and ex-chief vigilance commissioner Pradeep Kumar.
The Committee's mandate was to examine "irregularities" and "infirmities" in over 400 files on decisions taken by the AAP government.
Its tenure was to end on December 2. It had submitted its report to the LG office on November 27.