(Image source from: NBC News)

The disgraced former Michigan State University and United States of America Gymnastics doctor, Larry Nassar, has been moved from a federal prison in Tucson.

The 55-year-old Nassar had been an inmate at the U.S. Penitentiary Tucson since February.

On Sunday, the serial sex abuser was listed as an inmate at Oklahoma City's Federal Transfer Center on the Federal Bureau of Prisons website. The facility is typically used as a holdover location before inmates are moved to a new location. It is not clear where he will be placed after being held in Oklahoma.

The move comes weeks after Nassar's lawyers said in court filings he was assaulted in May after he was released into the general population of the high-security prison, the Detroit News reported. He was subsequently moved out of the general population prior to the move.

Nassar was transferred to the southern Arizona facility after being sentenced on sexual-assault charges in Michigan. It is the only high-security federal facility that also offers a sex-offender-management program.

The Indianapolis Star first detailed the sexual-assault allegations against Nassar in September 2016. Since then, more than 260 women and girls told law enforcement he sexually abused them.

Nassar pleaded guilty to child-pornography charges in federal court last summer. He must serve the entirety of his federal sentence before he can serve his state sentences.

If he lives to his 2069 release date, Nassar will then have to serve two-decades-long sentences in Michigan for 10 sexual-assault charges. He would be 105 years old in 2069.

By Sowmya Sangam