A penalty of Rs 5 crore has been imposed on Axis Bank, Rs 4.5 crore on HDFC Bank and Rs 1 crore on ICICI Bank after inquiring into charges levelled by a online portal Cobrapost.
"After considering the facts of each case...Reserve Bank came to conclusion that some of the violations were substantiated and warranted imposition of monetary penalty..." the central bank said in a statement.
The three banks refused to comment on RBI's action.
The penalty follows scrutiny carried out by RBI of books of accounts, internal control, compliance systems and processes of these three banks at their corporate offices and some branches during March/April 2013.
The scrutiny was conducted to probe the allegations of contravention of Know Your Customer (KYC)/anti-money laundering guidelines against them following the expose.
Although the investigation did not reveal any prima facie evidence of money laundering, RBI said that "any conclusive inference in this regard can be drawn only by an end-to-end investigation of the transactions by tax and enforcement agencies".
It further said that a similar scrutiny was being conducted at corporate offices of 36 other banks and "the process of follow up action in respect of these banks is at different stages of its completion."
The scrutiny of these three banks, RBI said, revealed violation of certain regulations and instructions issued by the central bank from time to time.