Mumbai: CBI has questioned Chitra Ramakrishna, former chief of the National Stock Exchange and her associates in connection with alleged market manipulation case. 

FIR has been filed against Chitra Ramakrishna for her alleged links with an unknown spiritual guru who stays in the Himalayas. 

Investigating officials have also intercepted telephonic conversations of Chitra Ramakrishna with spritual guru.

The central premier agency has serviced notice to Ms. Ramakrishna, COD Anand Subramanian, and her predecessor Ravi Narayan. CBI has also directed them not to leave the country. 

It was alleged that based on the instruction of an unknown spiritual guru, Mr. Ramachandra was hired Anand Subramanian as COD to National Stock Exchange. 

Ms. Ramkrishna, who was CEO and Managing Director of the National Stock Exchange from 2013 to 2016 before she quit for "personal reasons", is also under investigation for an alleged "glaring breach" of regulations - sharing confidential financial data with a 'yogi' living in the Himalayas.

The tick by tick case was registered against OPG securities and its managing director Sanjay Gupta and Ajay Shah who helped to develop the software. The case has also been registered against some officials in NSE for alleged stock market manipulation from 2010 to 2014.

It was also mentioned in the FIR about the alleged unfair dissemination of information from the market exchange's computer server to those of stockbrokers.

 For the period of investigation (2010-2014), information was sent in a sequential manner from the stock exchange's servers to the brokers' through 'tick by tick'-based system architecture, NDTV reports. 

Further, it was alleged that the broker who connected first to the stock exchange's server received 'ticks', or the market feed, before the broker who connected later, giving him/her valuable information.

It is further alleged that Sanjay Gupta had unfair access to this feed and this enabled his company, OPG Security Pvt Ltd, to access financial data a split second faster than his rivals.

An unknown spiritual guru was running the exchange and Ms.Ramkrishna was "a puppet", SEBI has alleged. 

Ms.Ramkrishna has claimed the information-sharing did not compromise NSE operations.

The NSE, Ms. Ramkrishna, and senior official Anand Subramanian have been ₹ 2 crores each, and the exchange has been barred from launching new products for at least six months.