A three-judge bench, headed by Justice T S Thakur, issued notices and sought response of the parties within six weeks on the PIL filed by NGO Centre for Public Interest Litigation (CPIL).
At the outset, the bench asked advocate Prashant Bhushan, appearing for CPIL, to disclose his source of information in a sealed cover.
"He is a whistle blower. He has already been physically threatened," Bhushan said.
Indicating his reluctance to part with it, the lawyer said the person who had provided him the information has already given up the job and has been threatened too,
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"Is there any correlation as to what they have got in response of their professional functions," it said, adding that there has to be a reciprocation of favours.
Responding to the query, Bhushan said all these officials and ministers, who received favours, knew that they have been dealing with the files of the particular company in their professional capacity.
He also referred to various email communications to claim there has been a nexus among politicians, bureaucrats and the company.
During the brief proceedings, Bhushan said that this is similar to the Niira Radia case and investigation is needed to unravel it.
On being asked about the authenticity of the emails on the ground that they might have been deleted, the lawyer said that any forensic investigation can authenticate them.