A Mississippi martial arts instructor has been charged with attempting to use a biological weapon, the US Department of Justice has announced.
James Everett Dutschke, who is 41, was arrested following searches at his home and a former business, as part of an investigation into ricin-laced letters sent to President Barack Obama and two other public officials.
If convicted, Dutschke faces maximum possible penalties of life imprisonment, a $250,000 fine and five years of supervised release.
He is expected to appear in the United States District Court in Oxford, Mississippi, on Monday.
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