"If they (Hazare, Ramdev) are really serious about fighting corruption, they should say something about the manner, in which, the two businessmen had become rich during the eight years of the BJP rule in Madhya Pradesh," he said during a press conference.
The I-T sleuths had earlier conducted raids at the premises of Dilip Suryavanshi, a builder and a road contractor and Sudhir Sharma, mining contractor and director of VNS Group of Institutions.
Singh lashed out at Baba Ramdev alleging that there were pictures of Sharma and Suryavanshi with the yoga guru.
"Therefore, he (Ramdev) must say something about the recent raids," he said.
He also cracked the whip on Shivraj Singh Chouhan for his "silence" over the issue.
"During the raids, the I-T department recovered government files and note-sheets from the residences of two businessmen. This has exposed the true face of the Chouhan government as now everyone knows who was actually running it," he alleged.
He said that Congress had put up the hoardings questioning Chouhan's relationship with the two businessmen.
"However, the administration removed these hoardings much before Chouhan returned to the state capital from his foreign tour," he said.
"But time will come when Chouhan will have to answer all the questions," added the Congress leader.