Washington Gripped by Alarm as Ricin Letters Suspected
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Washington went into terrorism-alert mode as authorities reported preliminary tests showed a letter sent to President Barack Obama contained the poison ricin and suspicious packages triggered a temporary lockdown in parts of two Senate office buildings.
With the capital already on edge after the Boston Marathon bombing, alarm spread on both ends of Pennsylvania Avenue as officials tried to determine the extent and nature of the threats. There is “no indication” the ricin mail is connected to the terrorist bombing in Boston, the FBI said in a statement.