New possible ricin letter sent to Obama

Authorities intercepted another letter addressed to President Obama that may have been contaminated with the deadly toxin ricin, federal law enforcement officials confirmed to CBS News Thursday.

The FBI is working the case with other agencies, CBS News correspondent Bob Orr reports.

Who sent ricin-laced letters to Bloomberg, gun control group?

Orr reports that the letter was postmarked from Shreveport, La.

Shreveport was also the postmark for two letters laced with the toxin that were sent to New York City Mayor Michael Bloomberg and his gun-control group in Washington.



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