Bernard Madoff has been moved from a North Carolina federal prison to a prison medical facility.
Federal Bureau of Prisons spokeswoman Traci Billingsley said Wednesday that Madoff was moved Friday.
She says the bureau won't publicly discuss the reasons for an inmate's transfer.
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Madoff has been imprisoned since March. That's when he pleaded guilty to fraud charges and admitted cheating thousands of investors out of billions of dollars.
The 71-year-old was arrested a year ago after he confessed his private-investment business was a fraud.
He is being treated at the Federal Medical Center, part of the Butner Federal Correctional Complex in Butner, N.C.
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