The French media report said that Dassault claimed the money was paid for 50 replicas of Rafale jets and the order was given to an Indian defence company.
A report also said that Dassault Aviation had paid about one million Euros to Defsys Solutions for 50 models of the aircraft which were to be given as 'gifts'.
The suspect payment was detected by French anti-corruption agency, Agence Française Anticorruption (AFA), during audit, revealed Mediapart.
The IAF would be moving the fighters to Hasimara in May as by that time the fresh set of pilots will complete their training.
Congress was referring to reports on former France President Francois Hollande's claims regarding a private Indian firm becoming an offset partner in the intergovernmental deal for the fighter jets.
Bhushan questioned how Anil Ambani's Reliance Defence, the Indian offset partner of French firm Dassault Aviation, could be involved in the project as "most of his companies are in debt."
Singh said the verification of the French media report, which quoted former French President Francois Hollande on the purchase of the Rafale fighter jets, will reveal the truth.
Hollande was quoted in an article by a French website as claiming that the Indian government had asked the French government to nominate Reliance Defence as its India partner in the deal.
The previous UPA government in 2012 started negotiations with Dassault Aviation to buy 126 Medium Multi-Role Combat Aircraft (MMRCA).
The company's Rafale aircraft for the navy and the air force are same, CEO Eric Trappier said.