A Mississippi man was arrested on Wednesday for allegedly sending two ricin-laced letters to Washington, D.C.
Federal agents arrested Paul Kevin Curtis in Corinth, Miss., for the crime. According to NBC, the letters both included the same phrase “to see a wrong and not expose it, is to become a silent partner to its continuance” and were both signed, “I am KC and I approve this message.”
Both letters were postmarked April 8, 2013 out of Memphis, Tenn. One was addressed to President Obama and the other to Senator Roger Wicker (R-Miss.).
The letter to the senator was intercepted as a postal facility in Maryland that screens the mail before allowing it to be sent to Congress; the second letter was intercepted in Washington, D.C., but at a mail facility off-site from the White House. The FBI has claimed that both letters were very similar to each other.
Ricin is a poison made from castor beans that can be fatal if someone touches or inhales it. However, the FBI is uncertain about the potency of the ricin on the letters, which are currently undergoing laboratory tests to determine how dangerous the poison was.
It is possible that the letters only contained ground castor beans, which would result in the positive field test, but pose little harm.