Law Minister Ravi Shankar Prasad cited media reports to lash out at the Congress for relying on the UK-based consulting firm, which he described as "rogue data analysis firm", for the 2019 Lok Sabha elections.
The Congress was quick with its rebuttal, accusing the minister of dishing out a blatant lie to divert the country's attention. If the firm was as shady as the government says it is, then why did the BJP engage the firm in the 2010 election, the Congress asked.
"This is not just a question of Congress Party's association with a rogue data analysis firm but it is a question of free and fair elections in India and democratic values of our country," Mr Prasad said at a media briefing on Wednesday.
The minister, who also delivered a stern warning that he hoped would reach across the Atlantic, asked the Congress if it would depend on data manipulation and theft of data to win an election.
Randeep Surjewala, the Congress' media department head, said Mr Prasad, who he taunted by describing him as a lawless minister, hurling false allegations against the Congress had become a daily affair.
"BJP's factory of fake news has produced one more fake product today. It appears fake statements, fake press conferences & fake agendas have become everyday character of BJP and its 'Lawless' Law Minister Ravi Shankar Prasad," Mr Surjewala said, pulling out claims by Cambridge Analytica that it had worked for the winning side in the 2010 Bihar elections won by the BJP-JD (U) combine.