Some information about the type of bomb that was used in the explosions near the Boston marathon finish line are starting to emerge.

Mass Rep Seven Lynch has said that ball bearings were stuffed in a pressure cooker and a timer was used to activate the bombs. Police have found pieces of a circuit board Lynch said he believes this isn't "some kid in his garage putting something together" There still is no solid lead on who or whom may be responsible for the awful devastation that this has caused so many people and families.

Although he hesitated to speculate, Lynch said that so far, signs point to a domestic terrorism rather than international.

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