A letter addressed to President Obama that may have been contaminated with the deadly toxin ricin is similar to two ricin-laced letters recently sent to New York City Mayor Michael Bloomberg, the U.S. Secret Service said Thursday.
A screening facility for mail sent to the White House intercepted the recent letter addressed to Mr. Obama, Secret Service spokesman Edwin Donovan said. The letter has been turned over to the FBI's joint terrorism task force for testing and investigation.
According to CBS News, the letter was postmarked from Shreveport, La.
Shreveport was also the postmark for the two contaminated letters sent to Bloomberg in New York and his gun-control group in Washington. All three letters were postmarked May 20.
Law enforcement sources say the ricin is crudely made and of poor quality.
Last month, a Mississippi man was arrested for trying to send ricin-laced letters to President Obama, Mississippi Sen. Roger Wicker and a judge. The letters addressed to the president and Wicker were sent April 8. Both letters tested positive for ricin but were intercepted before they reached their targets.
James Everett Dutschke was arrested at his home in Tupelo, Miss., April 27 in that investigation. In court papers, the FBI said ricin was found in a martial-arts studio run by Dutschke.
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