Sources said the agency officials have pin-pointed three Internet Protocol (IP) address -- a unique numerical label borne by each computer in a network that use worldwide web for communications -- two originated from Seattle, Pennsylvania in the US and other in Daugavpils, Latvia in northern Europe.
They said the agency has moved a local court here seeking permission to access authorities in the US and Latvia for collecting information on the IP addresses.
The CBI had on December 4 last year registered a case against unknown persons of "Pakistani Cyber Army" for hacking and defacement of its website under various Sections of Information Technology Act.
