Central security agencies have found about 2,500 defence presentations on a "compromised" computer of an Army Major, posted in Andaman and Nicobar islands, from which information was allegedly being transmitted to Pakistani intelligence agency.
Official sources said the seized computer has been sent for forensic analysis to the central laboratory (CFSL) in Hyderabad.
The security agencies including the National Investigation Agency (NIA) are also looking into the possible role of others in the case as the Major could not have had
access to most of the files himself, they said.
"The officer could not have had access to all the defence files. We are looking into who all might have given him the files which could also have been in good faith,"
the sources said.
Also, even when the computer was seized, some files were deleted, they said, adding the entire matter needed a "substantial level" of investigation.
"What is most disturbing was the fact that even when the computer was kept in the custody of authorities some files were deleted," a source said.
The Major had come under the scanner after it was found that his "personal" computer carrying a number of defence files was being used to transmit information to a
computer in Pakistan.
Though earlier, it was thought to be a case of hacking, investigators are now probing all angles.