Authorities: Mississippi man charged with possession, use of ricin as a weapon

Tupelo, Mississippi (CNN) - A Tupelo, Mississippi, man has been charged with possession and use of a biological agent as a weapon in connection an investigation into ricin-tainted letter sent to President Barack Obama and others, federal authorities said Saturday.

The federal charges against James Everett Dutschke come two days after prosecutors dropped charges against Paul Kevin Curtis in the same case amid Curtis' claims he was framed.