"He is an over-ambitious person who is playing into the hands of the BJP. He is untrustworthy," Congress spokesperson Rashid Alvi told IANS.
Congress general secretary Digvijay Singh has also jumped into the fray, questioning Kejriwal on 27 counts.
The Congress calls him the B-team of an anti-Gadkari BJP faction, while the BJP wants to keep him at a distance.
"He has taken up the issues of corruption and probity in public life. But he is yet to name his political party and state his position on ideology and issues of national and regional interest," BJP spokesperson Nirmala Sitharaman told IANS.