|Source: CBS News|
Updated 5:10 p.m. Eastern
BOSTON Two bombs exploded near the finish of the Boston Marathon on Monday, killing two people, injuring dozens and sending authorities rushing to aid wounded spectators at the world's oldest and most prestigious marathon, race organizers and police said.
Police found and defused at least one other explosive device. Law enforcement sources tell CBS News correspondent Bob Orr that authorities found one other device that is intact and has not been detonated.
One runner, a state police officer from neighboring Rhode Island, said he saw at least two dozen people with very serious injuries, including missing limbs.
About two hours after the winners crossed the finish line, there was a loud explosion on the north side of Boylston Street, just before the photo bridge that marks the 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 at least 23 others injured.
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