In 1 BBY, during the Battle of Scarif, the entire tower, which included the offices, was destroyed by the Death Star superweapon on the orders of Grand Moff Wilhuff Tarkin, so that the Death Star plans stored within the Citadel Tower's vault would not fall into the hands of the Rebel Alliance.
The Imperial Intelligence and Security Bureau offices were first mentioned in the 2016 reference book Star Wars: Rogue One: The Ultimate Visual Guide, which was authored by Pablo Hidalgo and published by Dorling Kindersley.
The Imperial Intelligence and Security Bureau offices were first mentioned in the 2016 reference book Star Wars: Rogue One: The Ultimate Visual Guide, which was authored by Pablo Hidalgo and published by Dorling Kindersley.
- Star Wars: Rogue One: The Ultimate Visual Guide