BOSTON (AP) - Two bombs exploded near the finish line of the Boston Marathon on Monday, killing two people and injuring at least 23 others in a terrifying scene of broken glass, smoke and severed limbs, authorities said.
A third blast rocked the John F. Kennedy Library several miles away and more than an hour later, but no injuries were reported, police said. A senior U.S. intelligence official said two other explosive devices were found near the marathon finish line.
There was no immediate word on the motive or who may have launched the attack and authorities in Washington said there was no immediate claim of responsibility. Some 27,000 runners took part in the 26.2-mile race, one of the world's premier marathons.
The twin blasts at the race took place almost simultaneously and about 100 yards apart, tearing limbs off numerous people, knocking spectators and at least one runner off their feet, shattering windows and sending smoke rising over the street.
As people wailed in agony, bloody spectators were carried to a medical tent that had been set up to care for fatigued runners.
Cellphone service was shut down in the Boston area to prevent any possible remote detonations of explosives, a law enforcement official said. The official was speaking on condition of anonymity because the investigation was ongoing.
Boston Police Commissioner Edward Davis asked people to stay indoors or go back to their hotel rooms and avoid crowds as bomb squads checked parcels and bags left along the race route.
The Federal Aviation Administration barred low-flying aircraft from within 3.5 miles of the site.