Administrators at Michigan State University allegedly did not notify federal investigators who were on campus investigating how the university handled reported sexual assaults about police and Title IX investigations underway targeting former university doctor Larry Nassar.

ESPN reported Thursday that the university had both a Title IX investigation and a campus police investigation into Nassar underway in 2014 when the school was the subject of a federal probe into how it handled claims of sexual assault and rape from students. But it did not notify the officials about the ongoing probe, the report says.

According to the report, campus officials have still not provided all documents related to the Nassar investigation to federal authorities.

Nassar was sentenced Wednesday to up to 175 years in prison for assaulting more than 150 young women during his time as a physician for both USA Gymnastics and Michigan State University.

Some of Nassar's victims include Olympic gymnasts Simone Biles, Aly Raisman, Gabby Douglas and McKayla Maroney.

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After days of emotional testimony from Nassar's victims, Judge Rosemarie Aquilina said it was her “honor and privilege” to sentence the former sports doctor.

“Your crime, all of your crimes, the depth of them, have cut into the core of this community and many communities,” Aquilina said during the sentencing.

“I just signed your death warrant," she added.

Also Wednesday, Michigan State President Lou Anna Simon resigned amid mounting criticism of her handling of the investigation.

"As tragedies are politicized, blame is inevitable," Simon wrote in her resignation letter. "As president, it is only natural that I am the focus of this anger. I understand, and that is why I have limited my personal statements."

Three top leaders of USA Gymnastics have also stepped down over the scandal, announcing their resignations Monday.

“We support their decisions to resign at this time,” said Kerry Perry, the organization's president and CEO. “We believe this step will allow us to more effectively move forward in implementing change within our organization.”