Three FIRs, including one against a company of Delhi Chief Minister Arvind Kejriwal's late brother-in-law, have been registered on May 9 by the ACB in the alleged scam.
Sharma, who is the founder of Roads Anti-Corruption Organisation (RACO) has also submitted a complaint to the ACB for a probe in the alleged "mysterious" death of Kejriwal's relative Surender Bansal.
He has also lodged a separate police complaint in this regard.
A complaint was filed by Sharma against Kejriwal, Bansal, proprietor of a construction firm and a public servant for alleged irregularities in the grant of contracts for roads and sewer lines in Delhi.
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