"It is now established that public money has been looted in the Delhi Jal Board tanker scam by the Arvind Kejriwal government," he alleged.
The Kejriwal government today sacked Mishra as the water minister.
Soon after the move, Mishra claimed he would "expose" the involvement of certain AAP leaders in an alleged scam in distribution of water tomorrow.
"Arvind Kejriwal not only owes an explanation to the citizens of Delhi but it is high time he submits his resignation for being involved in this water tanker corruption racket," Tiwari further alleged.