President Obama Briefed by FBI Chief
On background, from a WH official:
This afternoon, the President received briefings from FBI Director Robert Mueller and DHS Secretary Janet Napolitano on the active investigation and response to the incident in Boston, including the ongoing coordination with state and local officials. A photo of the President making the calls will be available at our Flickr site shortly.
Obama to make a statement at 6:10 PM ET in the White House briefing room.