The CBI questioned Rajiv Kochhar on Friday, ICICI Bank MD and CEO Chanda Kochhar's brother-in-law, for about nine hours in connection with the bank's Rs 32.5 billion loan to Videocon Group in 2012, officials said.
Rajiv Kochhar, who appeared at the CBI office in Mumbai, was asked about various aspects of restructuring of the loan to Videocon, they said.
The founder of Avista Advisory was asked about the help he extended to Videocon in relation to the loan from the ICICI Bank which was part of a Rs 400-billion credit given by a consortium of 20 banks to the group of Venugopal Dhoot.
He was questioned by the CBI on Thursday as well after his detention at the airport.
A preliminary inquiry is the first step by the CBI to gather information about the allegations. If the agency is convinced there exists prima facie material in the matter, it may register a regular case against the accused.
The deal recently made news after reports questioned the loan and linked it to a possible quid pro quo that Dhoot allegedly had with NuPower Renewables, a company founded by Deepak Kochchar, Chanda Kochar's husband and Rajiv Kochar's brother.
Last week, the ICICI Bank board came out in support of Chanda Kochhar, saying it had full faith and confidence in her. It described reports against her regarding credit disbursement to Videocon Group as "malicious and unfounded rumours".
The board also reviewed the bank's internal processes for credit approval and found them robust, the private sector lender had said in a statement.
With regard to loans to Videocon Group, it said the bank's current exposure was part of a syndicated consortium arrangement.
"ICICI Bank was not the lead bank for this consortium and the bank only sanctioned its share of facilities aggregating approximately Rs 32.50 billion which was less than 10 per cent of the total consortium facility in April 2012," it added.
The bank had clarified that none of the investors of NuPower Renewables were borrowers of ICICI Bank.