SACRAMENTO, Calif. -- A man has pleaded guilty to threatening to kill members of the band Korn.

The threats were made on the Internet and included some graphic detail.

Adrian McCoy, of Sacramento, pleaded guilty in federal court last Friday to threatening the band.

The prosecutor told ABC23 that McCoy made threats on a metal underground-related Web site in January of 2006. While metalunderground.com did not confirm if McCoy made threats against Korn on their site, one user using the name, LordAgony, was kicked off the site at that time for making threats against the band, saying he wanted the band destroyed.

On Jan. 7, 2006, LordAgony wrote, "You cannot possibly fathom how much I wish to utterly destroy this band...."

One of the site's moderators wrote in the comments of a Jan. 11, 2006 article to LordAgony after his posting threats: "No, you are crossing the line and have (been) posting your pointless rants in other non-Korn articles too. But I won't have any more of the attacks - on bandmembers or readers/posters here."

In September of 2007, the prosecutor said McCoy then made threats on the FBI's Web site that’s based out of Washington, D.C.

Specifically, the prosecutor said McCoy threatened to slit the band members’ throats and kill their family members.

McCoy's attorney said in court that his client was taking medication for mental issues.

Prosecutors said they have reached out to the band but wouldn't provide any specifics.

ABC23 spoke with Jonathan Davis' father, Rick Davis of the Kern County Board of Trade about the death threats. "When you start getting that kind of information, that level of focus from an individual -- who I would assume because of the fact he pled guilty in this -- that he's got some emotional problems. You begin to take those threats a little more seriously," Davis said.

Korn is on tour in Europe and could not be reached for comment.

McCoy is facing up to five years in prison when he is sentenced April 25.