A source at the CBI told Reuters that officials were likely to file charges related to the broader case as early as Friday but did not specify whether those might included Bharti.
An estimated 177 million Muslims in India, the largest Muslim minority population in the world, are unable to use Islamic banks because laws covering the sector require banking to be based on interest, which is forbidden in Islam.
Investors including units of Morgan Stanley and Citigroup have agreed to buy 28.3 million shares of Bharti Infratel at Rs 230 apiece.