Sign up for the MSNBC newsletter

You have been successfully added to our newsletter.

Let our news meet your inbox

NOW

Letter mailed to Pres. Obama tested positive for ricin

copied!

WNBC Chief Investigative Reporter Jonathan Dienst reports that letters sent to President Obama, New York City Mayor Michael Bloomberg, and a gun control lobbyist all tested positive for ricin in preliminary testing. Investigators believe the letters were sent by the same person and that no one has been harmed.May.30.2013

BEST OF MSNBC

Play All