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Letter sent to NYC Mayor Michael Bloomberg tests positive for ricin

May 29, 2013 at 7:40 PM
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NEW YORK, May 29 (UPI) -- A letter sent to New York Mayor Michael Bloomberg and intercepted at a municipal facility Saturday tested positive for ricin, The New York Times reported.

The newspaper Wednesday quoted two unnamed sources as saying a second letter containing the poison was found at a building in Washington that houses the Bloomberg-financed advocacy group Mayors Against Illegal Guns.

Both letters were postmarked from Shreveport, La., May 20, law enforcement sources told NBC News.

The New York letter was found at 100 Gold Street, where the Department of Housing Preservation and Development is located.

"The writer, in letters, threatened Mayor Bloomberg, with references to the debate on gun laws," said Paul Browne, chief spokesman for the New York Police Department.

Investigators said they believe one person sent both letters.

Police officers who came into contact with the New York letter were examined for minor signs of ricin exposure they presented Saturday, but the symptoms later subsided.

The FBI and the NYPD's Intelligence Division, responsible for protecting the mayor, were investigating.

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