Recruiting

Even as the news of the sudden death of that particular Nalg Kingdom's officer became public, it surprisingly did not rife up any big sentiments from the Nalg prisoners. Besides, by the time the news had spread, Jin and the Star Fox Interrogators had finished almost everyone that they needed to interview. 

So when the announcement came out officially, most people had been considered innocent. Not to mention, there was no way for other Celestial collaborators to escape, especially when Jin had conducted this within the Bamboo Fortress 'dungeon' and in Ress' isolated barrier as well. There was no way they could run unless they had the ability to summon a portal to the Celestial plane. (which by itself is still a probability but it was way too low that it could happen.) In fact, most of them were not too surprised at all considering there had already been rumours floating around that this particular officer might have been doing deals with the Mong Empire.