The sources said so far the probe has indicated that "first and second" level of decision making in the Ministries of Finance and Commerce relating to foreign investments was allegedly "compromised".
They said the names of some more officials of these two ministries and about five more corporate groups have cropped up during investigation which will be probed by CBI in the near future.
The sources said a senior official has been sent to Mumbai for overseeing the probe in the matter.
CBI has registered a case of criminal conspiracy, theft under IPC and misuse of official position under the provisions of the Prevention of Corruption Act against chartered accountant Khemchand Gandhi, Under Secretary in Department of Disinvestment and Grievances Ashok Kumar Singh and Section Officer in the Department of Economic Affairs Lala Ram Sharma.
It is alleged that the government servants were passing on documents related to foreign investment policies, which were being floated in the ministries, to Gandhi who in turn passed them on to big corporates for a price.
