By Robbie Ward TUPELO, Mississippi (Reuters) - A Mississippi martial arts instructor was charged on Saturday with attempting to use a biological weapon after a ricin-laced letter was sent to President Barack Obama earlier this month, the U.S. Department of Justice said. Everett Dutschke, 41, was arrested at his Tupelo home shortly after midnight by FBI agents following searches of the residence and a former business as part of the ricin letter investigation. He was later charged with "developing ... ...


BOSTON (AP) — With the Boston marathon bombing suspect in a prison hospital, investigators are pushing forward in the U.S. and abroad to piece together the myriad details of a plot that killed three people and injured more than 260.