As part of their strategy, Congress leaders addressed press conferences in several state capitals to target the BJP president over the alleged business dealings of his son while prodding the prime minister to speak on the issue. The charge has been rejected by the BJP and Shah's son, Jay Amit Shah, who termed the report "false, derogatory and defamatory."
"Modiji, ...Did you act as a watchman or were you a partner? Atleast say something," Gandhi said on Twitter.
Addressing a gathering at Kamla village in Kheda district in poll-bound Gujarat, Gandhi again targeted the prime minister.
"Modi ji had also said another thing (before the elections) that he does not want to become prime minister and be the 'chowkidar' (watchman) of the country's wealth. Now, where has the chowkidar gone?."
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Congress senior spokesperson Anand Sharma asked the prime minister to remove Amit Shah as BJP chief and demanded a Commission of Inquiry by two Supreme Court judges.
Party's communications incharge Randeep Surjewala addressed a press conference in Jaipur, while other leaders spoke in various cities including in Gujarat and Himachal Pradesh, both poll-bound states.
Sharma said Modi should "break his silence" on the claims and hit out at Union minister Piyush Goyal for defending Jay Shah, asking whether Goyal was "a minister, a spokesperson or business manager."
"Amit Shah should give up his post until the probe is over. He should do what Advaniji did, Gadkariji did. He should also resign or are there new parameters for him?," he said.
In Jaipur, Surjewala said Modi should relieve Shah of the party president post and get the claims probed by a two- member commission of Supreme Court judges.
In Kolkata, party spokesperson Gaurav Gogoi said Modi should prove that he is above party politics and demanded a probe into the claims of the media report.
"It is very easy to order a probe against opposition leaders but it is tough to order a probe against one's own party leaders," Gogoi told reporters.
In Lucknow, UP Congress chief Raj Babbar termed it as the "son's model" of doing business and demanded a Supreme Court probe and Shah's removal.
In Shimla, AICC secretary Ranjeet Ranjan repeated the charges and demanded a probe by sitting Supreme Court judge into companies of Jay Shah.