The FBI became aware of Nassar in July 2015 when it was contacted by USA Gymnastics, which trains athletes for the Olympics.
Disgraced gymnastics doctor Larry Nassar is expected to hear from more victims who say he molested them when his third and final sentencing hearing resumes.
Nassar, a former Michigan State employee, was sentenced to 40 to 175 years in prison for molesting young girls and women under the guise of medical treatment.
Many confronted Nassar face to face in the Michigan courtroom, describing abuse in his home, at his Michigan State University office and while he worked for USA Gymnastics, which trains Olympians.
Michigan State University, where Nassar assaulted young gymnasts and other athletes, is under fire by victims, lawyers and lawmakers who want to know why he was able to get away with it for so long.
This comes after the sentencing of Nassar, who worked at Michigan State as a doctor and received 40 to 175 years in prison for molesting young girls and women under the guise of medical treatment.