Pressure

Investigators examine site of second explosion on Boylston Street near the finish line of the 2013 Boston Marathon. (AP Photo)

Authorities recover pressure cooker lid

BOSTON (AP) — Authorities investigating the bombings at the Boston Marathon have recovered a piece of circuit board they believe was part of one of the explosive devices, and found the lid of a pressure cooker that was catapulted onto the roof of a nearby building.

04/17/2013

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