Threatening letters sent to N.Y. Mayor may contain ricin: police

NEW YORK (Reuters) – Two letters addressed to New York City Mayor Michael Bloomberg and his gun keep watch over crew contained subject material believed to be the deadly poison ricin, and referenced the controversy on gun regulations, police stated on Wednesday. The New York Police Department said preliminary assessments on the 2 letters, opened in New York and Washington, D.C., indicated the presence of ricin. Emergency staff who came in contact with the letters showed minor symptoms of ricin exposure, the police stated. …