A Mississippi man accused of sending poisoned letters to President Barack Obama and two other public officials pleaded guilty in US court.
James Everett Dutschke, 41, has been jailed since his arrest last April, when authorities accused him of sending ricin-tainted letters to Obama, U.S. Senator Roger Wicker of Mississippi and a local Lee County judge, Sadie Holland.
Ricin is a highly toxic protein found in castor oil plants that can kill an adult human in tiny doses.
Dutschke, a former martial arts instructor and one-time political candidate, originally had denied the charges but on Friday changed his plea in U.S. District Court in Oxford, Mississippi, according to a Justice Department press release.