Transcript for Sony Hackers Allegedly Mock FBI Investigation
We have new developments changing pace -- in the huge Sony cyberattack. Those hackers sending a message that mocks the FBI for its investigation almost taunting them. ABC's Tom llamas has the latest. Reporter: This morning the group behind the Sony hack firing book and taunting the FBI. The Hollywood reporter says an online post claiming to be from the guardians of peace includes a link to this page with a so-called Christmas gift message written in broken English as the other leaks have been it says in part "The result of investigation by FBI is so excellent that you might have seen what we were doing with your own eyes. We congratulate you success. FBI is the best in the world." ? the message links to this youtube video titled "You are an idiot." The video shows a montage of happy faces and animated dancing. It's unclear if the video uploaded in 2006 is directly linked to the cyberattack group. The Hollywood reporter could not verify the authenticity of the e-mail but says the message which ABC news did not receive appears similar to previous ones from the gop. On Saturday North Korea denied responsibility for the hack despite both the FBI and the president naming the regime as the culprits. They caused a lot of damage. Reporter: On state-run media the Kim jong-un government accusing the U.S. Of spreading groundless allegations and threatening grave consequences if the U.S. Rejected their offer of a joint investigation to find the real attackers. The white house is standing by its assertion the north Koreans hacked into Sony's computers and leaked embarrassing e-mails, employee information and unreleased content. All right, Tom llamas, thank you for that.
This transcript has been automatically generated and may not be 100% accurate.