Timeline: Boston Marathon bombings

Published On: Apr 16 2013 11:30:08 AM CDT   Updated On: Jan 05 2015 09:20:15 AM CST

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

Marathon explosion White House
13 / 42

4 p.m. -- U.S. Secret Service agents expand the security perimeter around the White House complex in Washington, D.C., and shut down parts of Pennsylvania Avenue.

Upload Photos / Videos