Ricin Letter Suspect Arrested

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Members of US Secret Service Uniformed Division secure an area in front of White House in Washington, DC, on April 17, 2013 as a part of tightened security following the Boston marathon bomb blasts. A letter addressed to US President Barack Obama has preliminarily tested positive for the deadly poison ricin, the Federal Bureau of Investigation said on April 17. In a statement, the FBI said the investigation into the letter sent to Obama and another sent to Senator Roger Wicker was ongoing, adding there was "no indication of a connection" to the Boston Marathon bombings.

Federal officials say an arrest has been made right after the president was sent ricin-positive letters Wednesday. The suspect is reportedly named Paul Kevin Curtis, of Corinth, Mississippi. The arrest comes just one day after a mysterious letter sent to Mississippi Sen. Roger Wicker was also found to contain ricin. The FBI says both letters are postmarked April 8, 2013, out of Memphis, and contain an identical phrase: “to see a wrong and not expose it, is to become a silent partner to its continuance.” Both letters are signed: “I am KC and I approve this message.”