Delhi Chief Minister Arvind Kejriwal on Monday demanded registration of a case against his predecessor Sheila Dikshit and jailing her for what he said was the 'water tanker scam' unearthed in the national capital."Now that we have submitted a report on the scam to Prime Minister Narandra Modi and Lt. Governor Najeeb jung, the former should ensure that Sheila Dikshit is sent to jail within two months," Kejriwal said while addressing the Delhi assembly here.Kejriwal also took a jibe at Leader of Opposition Vijendra Gupta and said that if the Prime Minister failed to send her to jail, Gupta will resign. In case he does not resign, we will sit on a hunger strike, the Chief Minister said.The Aam Aadmi Party government in June 2015 constituted a fact-finding committee to probe the irregularities in hiring some 385 stainless steel water tankers by the Delhi Jal Board in 2012, during Sheila Dikshit's rule.The five-member committee was formed by Delhi Water Minister Kapil Mishra.Its report submitted to Kejriwal in August 2015 highlights alleged corruption of Rs 400 crore in the process of awarding tenders for hiring water tankers.It recommended FIR against Congress leader Sheila Dikshit by the Central Bureau of Investigation and the Anti-Corruption Bureau (ACB).On Monday, almost a year later, the report was sent to the Prime Minister and Lt. Governor by the AAP government.