The Purge of the Dark Council occurred in 3950 BBY when Emperor Vitiate of the reconstituted Sith Empire ordered the elimination of the entire Imperial Dark Council, as well as every member of the support staffs of the five traitorous Councilors. While the Emperor's Royal Guard eliminated two of the Dark Councilors, and Jedi Master Revan slew Darth Nyriss, the remaining nine were summoned personally by the Emperor, who then destroyed the unsuspecting Dark Lords.