Breaking Boston Marathon News: 1 suspect dead, MIT under siege.  SWAT and FBI on scene. Fox News is reporting that the two suspects are brothers and of Chechen origin and that they've been living legally in the United States for about a year in Cambridge, Massachussetts.

Police agencies in the Watertown area of Boston are going door-to-door to track down suspect #2. All Boston area schools including Harvard University and M.I.T. have been closed for the day and mass transit has been shut down while police search for the suspect. Citizens have been advised to stay in their homes as the suspect at large has been described as armed and dangerous.