The Boston Globe   Ricin residue linked to Miss. suspect
TUPELO, Miss. — Ricin was found in the former martial arts
studio of the man suspected of sending poison letters to
President Obama and other public officials, and was also
discovered on a dust mask and other items he threw in the trash,
federal prosecutors said in a court document made public
Tuesday.    Annette Dobbs, who owns the small shopping center
where the studio was located, said authorities padlocked the
door to it. She said Tuesday that FBI agents have not told her
anything, including whether the building poses a health threat.
Inside the studio is one large room with a smaller reception
area and a concrete floor. Police tape covered the front and the
small back door.  Dutschke, 41, was arrested Saturday by FBI
agents at his home in Tupelo, and is being held without bond
pending a preliminary and detention hearing Thursday in US
District Court in Oxford.  The FBI searched his home, vehicles,
and studio last week, often while wearing hazardou