A U.N. torture investigator says he is frustrated at being denied an unmonitored visit to a U.S. Army private suspected of giving classified material to WikiLeaks. Juan Mendez says the U.S. government "has not been receptive to a confidential meeting" with Pfc. Bradley Manning.

Mr Mendez said in a statement on Monday that a monitored conversation would be counter to the practice of his U.N. mandate.

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