It seems almost impossible to believe, but the rivalry between two kindergarten schools in China led the principal of one school to kill a 5-year-old and a 6-year-old who attended the other school. With rat poison.
1:10 p.m. (EST): A third letter, this one sent to Senator Joe Manchin (D.-W.V.), has been found to contain ricin.
12:45 p.m. (EST): FBI spokesman Paul Bresson has confirmed that the substance found in the letter to the president was ricin.
The Secret Service says that a letter containing a suspicious substance and addressed to President Obama was received on Tuesday at a White House mail facility.