Larry Nassar, a former USA Gymnastics team doctor, was assaulted in jail overnight, according to two sources familiar with the situation.
Nassar was stabbed, a police source said.
In this Feb. 5, 2018, file photo, Larry Nassar sits in court hearing statements before being sentenced by Judge Janice Cunningham on three counts of felony sexual assault in Eaton County Circuit Court in Charlotte , Michigan.
Scott Olson/Getty Images, FILE
He is listed in stable condition, according to sources.
Nassar was convicted on state and federal charges of sexually assaulting members of the USA Gymnastics team. He is serving his sentences, which add up to hundreds of years, in a federal prison in Florida.
In this Nov. 22, 2017 file photo, Dr. Larry Nassar appears in court for a hearing in Lansing, Michigan.
Paul Sancya/AP, FILE
This is a developing story. Check back for updates.