President Obama is targeted by ricin-tainted letter

04/17/2013 | CNN · NBC News · ABC News

White House mail room workers intercepted a letter intended for President Barack Obama that appears to have been tainted with the deadly toxin ricin, officials say. The letter appears to have come from the same source as another intercepted letter, similarly apparently tainted with ricin, that had been addressed to Sen. Roger Wicker, R-Miss. More comprehensive tests will be needed to definitively determine the toxin's presence, but officials said the incident showed the need for vigilance in coming days.

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