It's more or less commonly accepted that its creator got jailed for being an arms dealer.
> He subsequently admitted to arranging or participating in seven murders, carried out as part of an extensive illegal business empire.
Yikes
Makes you wonder what kind of leverage/information you have to have to only get 25 years for admitting to being involved in 7 murders.
My theory is that Le Roux was just financing the (two?) TrueCrypt developers.
One of the greatest men of our times.
I knew the speculation on him being involved in some capacity, but as the wiki page states, this was never confirmed in any substantial way.
More importantly, if development seized with no public comment, that would be one thing and may strengthen the "he got arrested" theory. However, there was some final communication, specific recommendations to rely on Bitlocker of all things, a new version of Truecrypt was released solely for decrypting existing disks and then the web page was removed, including a flag set on robots.txt to ensure it wouldn't appear on archive.org. All this concurrent to a crowd funded source code audit that, in the end, did not find any server issues or backdoors (I recall some speculation back in the day, that either known code quality issues or an intentional backdoor could have caused the exodus).
That all makes it hard to link this to an arrest of the main developer, though I dislike speculation without any hard evidence and if there is no new information, I'll keep this filed under "there is no answer".