A sentencing hearing is today in Federal Court for a Bowie County woman who sent ricin-laced letters to President Obama and former New York City Mayor Michael Bloomberg.36-year old Shannon Richardson plead guilty last winter to possessing a biological toxin. She was arrested in June of 2013 after she claimed her estranged husband did it. Authorities say she tried to implicate her husband after he filed for divorce.

Three of the ricin-laced letters were sent from New Boston Texas in Bowie County.