A Texas actress was sentenced to 18 years in a federal prison on Wednesday on a biological weapons charge for mailing letters containing the toxic agent ricin to President Barack Obama, former New York Mayor Michael Bloomberg and a gun control advocate.
Shannon Guess Richardson, 36, whose career included minor television roles in shows such as "The Walking Dead," also will be subject to five years of supervised release and restitution of $367,000.
Richardson, shackled and dressed in the brown uniform of an inmate, apologized in a federal court in Texarkana, Texas, to Obama, Bloomberg and Mark Glaze, the director of Mayors Against Illegal Guns, a group founded by Bloomberg that lobbies for stricter gun laws.
"I never intended to hurt anyone," she said.