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The Boston Globe

Metro

Three killed, more than 100 injured in marathon blast

Area is locked down as FBI leads investigation

Two bomb blasts, 12 seconds apart, rocked the finish line of the 117th running of the Boston Marathon on Monday, killing at least three people, including an 8-year-old Dorchester boy, wounding more than 130, and leaving the sidewalks of Boylston Street covered in blood.

Medical professionals on hand to care for blisters and sore knees in Copley Square suddenly found themselves treating life-threatening lacerations and lost limbs, as a high holiday in Boston — Patriots Day — turned to an epic tragedy. Emergency workers rushed to the scene, despite the very real possibility of more blasts.

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