Two letters were sent to New York Mayor Michael R. Bloomberg have tested positive for a deadly poison called ricin. Police said that one letter was opened Friday at a New York City mail center in Lower Manhattan.
Mail room staff members who came in contact with the letter at the mail center did not become ill, though several police officers did experience mild symptoms. They are being treated at a New York City hospital as a precaution.
The letters contained references to the gun debate and include threats to Mayor Bloomberg.
The FBI is currently investigating the letters and have determined the following:
- Both letters bore the same postmark and had been sent from roughly the same time and place.
- The letters tested positive for ricin at the National Bioforensic Analysis Center
- Most suspicious letters investigated b the FBI turn out to be negative