Bobb said he wants a judge to compel Board of Education Member Anthony Adams, David and Andrew Farbman, owners of The Farbman Group, and Sharon Harbin, a former school district appraiser, to explain before district officials what their role was in brokering about 24 real estate transactions — real estate purchases that lead to the district overpaying for more than 24 properties using money from the $1.5 billion construction bond approved in 1994. So far these four individuals have refused to cooperate with the investigation according to the Detroit Free Press.

Bobb said in the announcement that he is “not accusing anyone of anything” and that he just wants to know what role each individual played.

Voters approved a new $500.5 million construction bond earlier this month, although the 1994 bond is still a source of controversy and widely believed to have been misspent.