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national bioforensics analysis center

File photo of a guarded White House. (credit: JEWEL SAMAD/AFP/Getty Images)

Tests Link Deadly Ricin To Obama Letter Suspect

When poison-laced letters were sent to President Barack Obama and two other officials, it didn’t take long to track down a suspect based on a phrase often used by an Elvis impersonator named Kevin Curtis: “I am KC and I approve this message.”

05/01/2013

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