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Boston lockdown: Authorities order residents to shelter in place during massive manhunt

A resident watches as police search an apartment complex in Watertown, Mass., on April 19.
A resident watches as police search an apartment complex in Watertown, Mass., on April 19.CJ Gunther / EPA
SWAT teams search for the remaining Boston Marathon bombing suspect in Watertown, Mass., on April 19.
SWAT teams search for the remaining Boston Marathon bombing suspect in Watertown, Mass., on April 19.Jessica Rinaldi / Reuters
A resident watches as police search an apartment complex in Watertown, Mass., on April 19.
A resident watches as police search an apartment complex in Watertown, Mass., on April 19.CJ Gunther / EPA

NBC News reports: Boston and its surburbs, universities and transit system were on total lockdown Friday as police hunted for marathon bombing suspect Dzhokhar Tsarnaev -- on the loose after his terrorist brother was killed in a stunning chain of events that left one cop dead and another injured, officials said. Read full story

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A woman looks out a window at her home as police start to search an apartment building in Watertown on April 19.
A woman looks out a window at her home as police start to search an apartment building in Watertown on April 19.Charles Krupa / AP

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