This from nytimes.com: “A letter addressed to Mayor Michael R. Bloomberg that arrived late last week at a municipal building has tested positive for ricin, according to two people familiar with the matter. A second letter containing the poison arrived at a building in Washington that houses Mayors Against Illegal Guns, a group Mr. Bloomberg helps run and finances, a person familiar with the matter said. Investigators believe both letters were sent by the same person.” A spokesman indicated that the text of the letters refers to the gun control debate. Oh goody. More as and when it becomes available. Watch this space.