I thought ricen was a type of mold. I know the soviets used it in at least one assassination. It produces flu-like symptoms in four days followed by death.
I know the soviets used it in at least one assassination. Yup ... that "little-steel-ball-injected-via-an-umbrella" bit. As the linked article says, it's derived from the castor plant and is almost tailor-made to kill humans.