The Boston Marathon headquarters has been locked down after an explosion was reported near the finish line. Also an explosion has been reported at the John F Kennedy Library.  According to WBSM, Bloody spectators were being carried Monday to the medical tent that had been set up to care for fatigued runners. Police wove through competitors as they ran the course.

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There were two booms heard from near the finish line inside the Fairmount Copley Plaza Hotel. Race officials locked down the hotel because of the report. Police, Fire and Medical are on seen at the north side of Boylston St.

The sound of two booms, which sounded like thunder, had come a short time earlier. Were following this story, Two people were killed and 23 were injured.