"I am briefed from time to time about the inquiries that are being conducted by various agencies -- that is a matter of routine briefing...The Adani Group has figured in such briefings but right now I cannot tell you the details of each case," Chidambaram said.
He also added that ministers "do not give directions" on individual cases.
Asked if the Central Board of Direct Taxes was suspicious about investments in the capital market made by certain foreign individual investors through Participatory Notes, Chidambaram said he was not aware of it.
"The P-note issue was addressed three-four years ago. Investment through P-notes is a regulated activity," he said.