Long and complicated story. In essence it was contract cheating. Both he and another student at another uni bought the same dissertation and submitted them a few days apart.
But our chap (who submitted first) claimed that he sent a late draft to his supervisor - a member of staff here - and that supervisor must have sold on or shared his dissertation with this other student. A very serious allegation as I'm sure you can imagine.
I had to do the investigation as the case lead, getting files and raw data and so on. His story just didn't stand up (this other student apparently corrected a few mistakes he made as well).
We had 3 hearings with him. In the final one we told him straight that we know it was contract cheating, we know where he got it from, know the website, know the original file (which i got a copy of), we know he lied previously. We told him that if he was honest and came clean we would take it into account. But no, he stuck like glue to his story that someone stole or shared his file (which was utter shite to be honest) and he really did do all the work himself.
Loads more to this case than what I have put here but this is the rub. Expelled, obviously, with every single course he ever did wiped out also. We could not be any harsher.
On a separate case, a student used Chegg for an exam paper and got the sizzling score of 3/100 from their "expert answers"
In both cases students paid good money to buy utter garbage.