A series of bombs exploded near the finish line at the Boston Marathon on Monday, leaving two people dead and more than two dozen injured, according to the Boston Police Department. A third explosion was heard just before 4 p.m., about an hour after the first two blasts. The police were apparently aware of that device before the explosion occurred. [...]
The first blasts took place about four hours after the start of the men's race, which meant that there were still several thousand runners yet to finish the course. Several news outlets reported that a loud explosion was heard on the north side of Boylston Street, near a photo bridge that marks the finish line. Another explosion was heard shortly afterward.
The Boston police confirmed at a late afternoon news conference that they were investigating the explosions. A senior United States government official said that the Boston police and the F.B.I. had received no reports in recent days about a threatened attack on the marathon and that there was no warning on Monday.
The Boston Globe is running a liveblog on its main page with the latest updates on what's happening there. So far, over 100 people have been treated in Boston hospitals as a result of the Boston Marathon Bombing. Local, state, and federal law enforcement agencies are investigating this incident. And security has been heightened there, in New York, in Washington, in Los Angeles, in San Francisco, and elsewhere.
We'll update the blog here as soon as we know more on what happened today and what happens next.