That's according to a letter from the attorney to Michigan Attorney General Bill Schuette, who requested a copy of a "report" that MSU conducted.
Schuette said the information was "crucial" to deciding whether any other individuals should be held responsible for allowing Nassar to sexually abuse young women for almost two decades. Nassar, however, was able to give a statement apologizing to his victims when he entered a guilty plea to charges of criminal sexual assault. He admitted to using his power as a renowned physician in the gymnastics community to sexually assault girls and young women who came to him seeking medical treatment.
As well as the criminal cases against him, more than 130 women have filed civil lawsuits against Nassar alleging abuse.
Investigators said they had discovered more than 37,000 images showing child sexual abuse on Nassar's computers in 2016 - including of children as young as six.
Nassar, 54, has admitted to using his power as a doctor at Michigan State and with USA Gymnastics for almost two decades to sexually assault young women who came to him for medical care. The spokesman said Michigan State now has no reason to believe any criminal conduct was found in that probe.
Cody said Fitzgerald responded to the attorney general's request for more information on Wednesday. The only other party that has investigated the potential culpability of those who allegedly enabled Nassar to date is Fitzgerald's law firm.
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"In the MSU matter, we believe the evidence will show that no MSU official believed that Nassar committed sexual abuse prior to newspaper reports in late summer 2016", Fitzgerald said.
"Plaintiffs' counsel have publicly compared this case with the matter involving Penn State University", Fitzgerald's response reads, in part.
Andrea Bitely, a spokeswoman with the Attorney General's office says "We are reviewing to determine next steps". He claimed that the attorneys for the women suing Michigan State have attempted to force them to share information by trying their case in the press. "We will not be goaded into doing otherwise by plaintiff's attorneys".
Manly said athletes who were uncomfortable with Nassar years ago reported their concerns to university staff but nothing happened.
Gretchen Whitmer, a Democratic candidate for governor who briefly served as a Lansing-area prosecutor, wants state police to look at how Michigan State dealt with Nassar.
Those victims, along with Schuette, say they want to see MSU's report on the matter.
"It is clear that Nassar fooled everyone around him - patients, friends, colleagues and fellow doctors at MSU", said Fitzgerald, who built a crime-busting reputation as USA attorney in Chicago.
"Today the justice feels very incomplete", said the 32-year-old.