With Boston Marathon bombing suspect Dzhokhar Tsarnaev's trial beginning Monday, revisit a timeline of the events in the case so far.
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.
No email address was supplied by
To complete your registration on this site, please supply an address.
Please confirm or modify the email address to which you will have subscription offers sent.
For a more personalized experience, please supply the following optional information.