Bernard Madoff's lawyer said Thursday his client has experienced dizziness and high blood pressure.

Ira Sorkin made the comments to The Associated Press a day after word came out that the 71-year-old disgraced financier had been transferred from a North Carolina federal prison to Duke University Medical Center and then moved to a prison medical facility on Monday.

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Financier Bernard Madoff was sentenced to 150 years in prison on June 29 for masterminding the largest investment scam in American history.

The Bureau of Prisons said Thursday that Madoff remains under medical care for a seventh day.

Prison officials have declined to reveal why he was transferred but bureau spokeswoman Traci Billingsley did say there have been no assaults at the prison in the past week.

Madoff has been imprisoned since March after pleading guilty to fraud and admitting cheating thousands of investors out of billions of dollars.

With files from The Associated Press