OXFORD, Miss. - The ricin mailed to the president and a U.S. senator is relatively easy to make but generally can't be used to target a large number of people, experts say. A Mississippi man, Paul ...

WASHINGTON (AP) – Ever since the anthrax and terrorist attacks of Sept. 11, 2001, the poison ricin has at times been lumped in with other bioterrorism agents because it comes from a relatively common ...

Ricin, contained in a package addressed to the White House, was intercepted by investigators on Saturday, the FBI said. The poison, found in castor beans, could “potentially be used as a biological ...

OXFORD, Miss. -- Federal authorities have produced scant evidence linking a Mississippi man to the mailing of ricin-laced letters to the president and a senator, his attorney said. Christi McCoy said ...

German authorities thwarted an Islamic extremist plot by a Tunisian man who planned to use the toxin ricin for an attack. Federal prosecutors said on Thursday that Sief Allah H., whose last name was ...