Sombure sector was controlled by Moff Utoxx Prentioch. After the substantial defeat of the Galactic Empire at the Battle of Endor, Prentioch seized control of the sector's military forces and began forming his own empire.
- "The Kaal Connection"—Star Wars Adventure Journal 7
- Classic Adventures, Volume 4: The Best of the Journal (Reprint)
- The Essential Guide to Warfare