November 26, 2013 12:51 pm -

Sharon Guess Richardson pleaded guilty and agreed to a deal that caps her sentence at 18 years, says her attorney, Tonda Curry.

“Shannon is anxious to admit her role in ordering the components to make the ricin, her role in the letters that contained the ricin, and to tell the government who else was involved in those offenses,” Curry said.

Curry did not say more about Richardson’s possible motives or whom she might name…

Before her arrest in June, prosecutors say Richardson — an actress — tried to frame her now-estranged husband for mailing the letters containing ricin, a powdery substance that can cause respiratory failure if inhaled.