A major explosion near the finish line of the Boston Marathon has injured dozens, marring a day that's typically a cause for celebration in the city.
The exact events that unfolded aren't immediately clear. The professional portion of the race had finished as planned early this morning, but the portion for amateur runners was ongoing at the time. Some reports from the scene:
BREAKING NEWS: At least dozens of people have been seriously injured, a Globe staffer on the scene says.— Boston Globe News (@GlobeMetro) April 15, 2013
Explosion at coply twitter.com/Boston_to_a_T/…— Boston to a T (@Boston_to_a_T) April 15, 2013
Boston marathon headquarters locked down after explosion reported near finish line: spokesman #breaking— Reuters US News (@ReutersUS) April 15, 2013
BREAKING NEWS: Two powerful explosions detonated in quick succession right next to the Boston Marathon finsh line this afternoon.— Boston.com News (@BostonDotCom) April 15, 2013
Boston Fire/EMS radio reporting more possible unexploded devices near the scene: broadcastify.com/listen/feed/62…— Adam Jacobi (@Adam_Jacobi) April 15, 2013
That last link features a live feed of Boston's police scanner. CBS in Boston added to the report, saying that one explosion was at the finish line and another was up the street, though the details are hard to come by at the moment.
A spectator at the scene tweeted a photo showing blood spatter and police/fire personnel tending to victims (warning: it's very graphic).