A package containing a vial of the deadly poison ricin was found in a postal distribution center at the Greenville, S.C., airport, but officials said they do not believe the incident is related to terrorism, reports the Greenville News.
Officials with the U.S. Centers for Disease Control said no traces of ricin were found on the envelope or anywhere outside the vial. Mail that came in contact with the envelope was not exposed.
South Carolina Law Enforcement Division Chief Robert Stewart said the letter appeared to be linked to an extortion plot. He would not say who the letter was addressed to, where the letter was going or what it said. He also would not say how much ricin was in the vial or what form it was in – powder or liquid.
“There is no evidence to indicate this is linked to international terrorism but is more criminal in nature,” said a spokesman for the federal Homeland Security Department in Washington.