A U.S. federal grand jury has indicted a Mississippi man for allegedly sending poisoned letters to President Barack Obama, a U.S. senator, and a state judge.
James Dutschke faces life in prison if he is convicted.
Charges include possessing a biological agent for use as a weapon and threatening the president of the United States. Dutschke says he is innocent.
He allegedly sent ricin-laced letters to Mr. Obama and Mississippi Republican Senator Roger Wicker. The letters were intercepted at mail-handling facilities and the president and senator were never in any danger.
Police arrested Dutschke in April after arresting and later releasing another man whom Dutschke allegedly tried to frame.