Timeline: Boston Marathon bombings

Published On: Apr 16 2013 11:30:08 AM CDT   Updated On: Mar 04 2015 02:04:36 PM CST

With opening arguments beginning in the trial of Boston Marathon bombing suspect Dzhokhar Tsarnaev's -- revisit a timeline of the events in the case so far.

Running shoes at marathon
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Paulo Whitaker/Reuters

10:40 a.m. -- The final large wave of runners at the Boston Marathon starts, another group consisting of approximately 9,000 runners.

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