The United States has acknowledged that the conviction of an Australian man held for nearly six years in Guantanamo Bay was not legally valid.

The Australian, David Hicks, was one of the first people sent to Guantanamo, and he has already figured in a key U.S. court decision that expanded the rights of detainees held in the offshore prison. Initially charged with multiple crimes, including conspiracy to commit acts of terrorism, attempted murder, and aiding the enemy, Hicks ultimately pleaded guilty to a single charge of providing "material support'' to terrorism. ...

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