Authorities say former Michigan State University sports doctor Larry Nassar has been transferred to another federal prison facility.
The Federal Bureau of Prisons website shows Nassar is at the Oklahoma Federal Transfer Center in Oklahoma City.
He had been imprisoned in Tucson, Arizona.
Nassar's attorneys said last month he was assaulted within hours of being placed in the general population at the Arizona federal prison.
Ralph Miller, a retired federal prisons worker who specialized in sex offender designations, tells The Detroit News the transfer is likely due to the assault.
Nassar abused hundreds of women and girls under the guise of treatment.
He's serving decades in prison and likely will never be released.