Interesting article from SI. Apparently lead agent for most of the case as well as possibly other agents are under criminal investigation for misuse of funds. They were allegedly using funds for the operation to gamble and live it up in Las Vegas.
https://www.si.com/college-basketball/2018/05/23/fbi-agents-ncaa-basketball-investigation-las-vegas
https://www.si.com/college-basketball/2018/05/23/fbi-agents-ncaa-basketball-investigation-las-vegas