[Source] The Del Zennis system was a restricted star system that was used as a research testing ground for the Galactic Empire's Imperial Interdictor about four years before the Battle of Yavin. The Imperial Interdictor was a prototype warship equipped with four gravity well projectors that were capable of pulling ships out of hyperspace. Under the command of Admiral Brom Titus, the Interdictor succeeded in destroying one rebel patrol and capturing the CR90 corvette Liberator, the flagship of Phoenix Squadron. Among their captives were Commander Jun Sato and Ezra Bridger, a young Jedi-in-training. During a rescue mission mounted by Kanan Jarrus, Rex, and Chopper, the Imperial Interdictor and its escort light cruisers were destroyed, leaving the surrounding space strewn with wrecked debris