Mayor Michael Bloomberg arrives to speak at the Real Estate Board of New York on Thursday, May 30, 2013, in New York. Two threatening letters containing traces of the deadly poison ricin were sent to ... more 
Mayor Michael Bloomberg arrives to speak at the Real Estate Board of New York on Thursday, May 30, 2013, in New York. Two threatening letters containing traces of the deadly poison ricin were sent to Bloomberg in New York and his gun-control group in Washington, police said. The anonymous letters were opened in New York on Friday at the city's mail facility in Manhattan and in Washington on Sunday at an office used by Mayors Against Illegal Guns, the nonprofit started by Bloomberg, police said Wednesday. (AP Photo/John Minchillo) less 
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Associated Press | Photo By John Minchillo
Fri, May 31, 2013 2:23 AM EDT