Indiana has fired head coach Kevin Wilson, Gregg Doyel and Zach Osterman of the Indy Star report, citing athletic department sources.
An off-field issue is the reason for the dismissal, a source told Terry Hutchens from CNHI Sports Indiana.
Three days ago, quarterback Zander Diamont told FOX59 he was quitting football over a fear of brain injuries, though he didn't directly reference Wilson as the reason why he was retiring.
"I think that for my safety and my future - I’m not going to the NFL - I need my brain. So that was the decision," Diamont said.
The school is expected to make the move official at a press conference scheduled for 6 p.m. ET tonight.
In six seasons, Wilson compiled a 26-47 overall record, and 12-37 in conference play. The Hoosiers qualified for a bowl game in 2015, their first since 2007.
Indiana finished 6-6 this year, and again qualified for a bowl game, for the first time in back-to-back years since 1991.