New Delhi, March 13 -- The CBI has approached Facebook and Cambridge Analytica seeking additional information following their responses to its queries related to alleged illegal personal data harvesting of Indians from the social networking platform, officials said Wednesday.

The agency officials said the CBI had received responses to its queries from both the companies but it needed more details from them on some specific questions.

The officials refused to divulge further details on this communication as the inquiry is at a crucial stage where the CBI will take a call on whether to proceed further with an FIR, they said.

In the letters sent to the companies, the Central Bureau of Investigation (CBI) has sought the details of data col...