The loose organization of hackers known as Anonymous released a recording Friday of a telephone call between the FBI and New Scotland Yard that it claims to have recorded surreptitiously.
The group posted the 16-minute conference call on one of its websites.
The FBI and New Scotland Yard concede that a private conversation was released, but didn’t cast blame on any particular group.
“The information was intended for law enforcement officers only and was illegally obtained. A criminal investigation is under way to identify and hold accountable those responsible,” the FBI said in a statement.
In the recording, law enforcement officials are heard discussing advancements in investigations into hackers. Some of the names of the hackers are bleeped out in the recording, while others are not.
A law enforcement official told CNN that the call took place on January 17, and was regarding an investigation into the LulzSec hacker group that is being handled by British authorities.
The official said that no FBI computer systems were hacked.
The agency has been investigating Anonymous for more than a year.
(CNN Wire Staff, CNN’s Carol Cratty contributed to this report)