Timeline: Boston Marathon bombings

POSTED: 10:30 AM Apr 16 2013   UPDATED: 2:08 PM Jul 10 2013

With Boston Marathon bombing suspect Dzhokhar Tsarnaev pleading not guilty Wednesday in his first court appearance since being arrested, revisit a timeline of the events in the case so far.

Marathon Timeline - Race Begins
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9 a.m., April 15 -- Mobility-impaired runners kick off the 117th Boston Marathon.



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