A White House official has declined to comment when pressed on the possible extradition of Amanda Knox to Italy.
A spokesman said: "This is a matter, as I understand it from my reading of the press, is still in a legal proceeding.
"For questions about that issue, I would refer you, as a broad principle as opposed to a matter that is still in a legal process, I would refer you to the State Department and the Department of Justice."
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The elderly woman's son complained to the council that his mother had been deprived of her liberty in an 'unprecedented' legal case.