The FBI may be having the “last lulz” today after arresting five top LulzSec members based on reports from one of the group’s own.

Police in the U.S., Great Britain and Ireland took the men, alleged to be top members of Lulzsec, into custody Tuesday morning. The arrests were made based on intelligence handed to police by Hector Xavier Monsegur, or “Sabu,” who is considered to be the leader of LulzSec. Monsegur had been “secretly arrested” and turned into a “cooperating witness” by the FBI, according to a Fox News report.

“This is devastating to the organization,” an FBI official told FoxNews.com. “We’re chopping off the head of LulzSec.”