5 p.m. Update: Boston police commissioner says a third bomb has exploded at the JFK Library.
Update: Intelligence official: 2 more explosive devices found at Boston Marathon; being dismantled.
BOSTON (AP) - Two bombs exploded near the finish of the Boston Marathon on Monday, killing two people, injuring 23 others and sending authorities rushing to aid wounded spectators, race organizers and police said.
One runner, a Rhode Island state trooper, said he saw at least two dozen people with very serious injuries, including missing limbs.
About two hours after the winners crossed the line, there was a loud explosion on the north side of Boylston Street, just before the photo bridge that marks the finish line. Another explosion could be heard a few seconds later.
The Boston Marathon said that bombs caused the two explosions and that organizers were working with authorities to determine what happened. The Boston Police Department said two people were killed and 23 others injured.
Competitors and race volunteers were crying as they fled the chaos. Bloody spectators were being carried to the medical tent that had been set up to care for fatigued runners. Authorities went onto the course to carry away the injured while stragglers in the 26.2-mile race were rerouted away from the smoking site.