An envelope sent to the office of Sen. Roger Wicker (R-Miss.) included a
substance that has tested positive for Ricin, two sources said.
It was not immediately clear when the envelope was received, but senators
said it was identified on Tuesday morning as containing Ricin. It arrived at
a Senate mail facility, which has now been closed for more testing — all
mail bound for Capitol Hill is now being directed through a U.S. House
facility.
Read more: http://www.politico.com/story/2013/04/roger-wicker-letter-ricin-90171.html#ixzz2Qg9VJV8H
