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.

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U.S. Secret Service agents walk around the White House complex in Washington, D.C., after several explosions struck the Boston Marathon as runners crossed the finish line.

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