A former coach of the U.S. Olympic gymnastics team, John Geddert, was under investigation, a sheriff in Michigan said on Tuesday, coming on the heels of a sexual abuse scandal surrounding a team doctor with whom the coach had worked.

The Eaton County Sheriff’s Office said people had made complaints against John Geddert, without providing details.

Geddert was not immediately available for comment.

In January, USA Gymnastics suspended Geddert, who worked with Nassar. The coach was criticized for creating a hostile environment by several victims during Nassar’s sentencing hearings.

Geddert ran a Lansing-area gymnastics center called Twistars, where athletes said Nassar molested them in a back room.

During sentencing hearings for Nassar, nearly 200 victims told the courts about his decades of abuse.