Look back at Boston Marathon bombing

Published On: Apr 15 2013 03:24:15 PM CDT   Updated On: Jan 05 2015 09:22:52 AM CST

The trial for Dzhokhar Tsarnaev, the man charged in the Boston Marathon bombings that killed three people and injured more than 200, begins Monday. Take a look back at scenes from the April 15, 2013, incident.

Boston Marathon explosion
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New York, Washington and other cities tightened security immediately after the explosions, according to CNN.

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