The facts of whether this judge is involved in the current BN corruption case are already established. Just not widely known. I only spent a few moments looking into it but the sources claiming Sagi was one of the judges for the current case are mainly Facebook, Islamic World News, some Iranian website etc. Oh and the DailyMail 😬. A lot of sources don't link the actual judge and current case.
Disclaimer: or 30m ago or so at least. Might have changed by now of course.
I agree the investigation into the accident conclusions may never be known. And why should they?