It wasn’t related to the Marathon bombings. Just a coincidence.
Bombings
“Tom Putnam, director of the library, told the Boston Globe that the fire appeared to be unrelated to the bombings.
Boston Police Commissioner Edward Davis told the Associated Press earlier that the fire may have been caused by an incendiary device, but it is unclear if it was related to the explosions at the Boston Marathon finish line.”
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Okay, anything you say.
It was just a coincidence.