CFTC 'Staff' Placed on Leave Amid Investigation Beege Welborn

"I’m disturbed by the many accounts of serious misconduct by former union leadership in this report —including a lengthy scheme to defraud the American taxpayer over many years..."  - Beege Welborn
Seemed noteworthy at the time, but there wasn't a lot of information besides what was actually IN the announcement itself.

The government's Commodity Futures Trading Commission (CFTC) regulates the commodities and derivatives markets.

...the CFTC has placed staff on administrative leave for potential violations of laws, government ethics requirements and professional rules of conduct. Investigations are currently ongoing into these matters and the CFTC will provide updates as appropriate. 

What sort of hanky-panky was going on, and how did they find it?...