District 209 issue before federal grand jury?

Forest Park Review wrote about District 209 (Proviso Township High Schools) receiving a subpoena to provide documents and records to a federal grand jury.

YOU ARE ALSO COMMANDED to bring with you the following document(s) or object(s):

All Proviso Township School Board minutes, including minutes of open and closed or executive sessions, during the period January 2007 - June 2007, and copies of any audio or video tapes of closed or executive sessions during the period January 2007 - June 2007.

Any guesses what the feds are interested in for this period?

* I posted this on the January meeting.
* Jose Santiago's retirement date was something odd fiddled with in closed session.
* Melvin Berry was let go in January.
* The Technivista contract was approved at the February board meeting.
* Superintendent Stan Fields spent district money on a PLCCA fundraiser.
* This post covers the March meeting of the board of education.

I'm about to turn into a pumpkin. I'll look through May and June later.