(CNN)-- A Texas woman has been indicted and charged with mailing ricin-laced letters to President Obama and New York Mayor Michael Bloomberg, a U.S. attorney's office in Texas said Friday.
She is Shannon Guess Richardson. The three-count indictment said she allegedly mailed three threatening letters around May 20 to Obama, Bloomberg, and Mark Glaze -- director of Mayors Against Illegal Guns.
Richardson was arrested on June 7 in Mt. Pleasant, Texas, and has been detained since that time. If convicted, Richardson faces up to five years in federal prison on each charge.
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