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U.S. officials say the Army private suspected of giving classified data to WikiLeaks is being moved to a base in the Midwest state of Kansas in the wake of international criticism about his treatment during his detention at a Marine Corps base near Washington.

The officials say an announcement that Army Pfc. Bradley Manning will be moved is expected Wednesday. The officials spoke on condition of anonymity because the move has not yet been made public.

Amnesty International has said Manning's treatment may violate his human rights. A committee of Germany's parliament has also protested about his treatment to the White House.

Manning is being held in maximum security in a single-occupancy cell at the Marine base, and he is allowed to wear only a suicide-proof smock to bed each night.