1 Boston Bombing Suspect Dead, Police Search for Suspected Accomplice

Boston Marathon bombing suspect Dzhokhar Tsarnaev.

Manhunt underway for second Boston bombiing suspect Dzhokhar Tsarnaev.

Police with guns drawn search for a suspect on April 19, 2013 in Watertown, Massachusetts.

A suspect wanted for questioning in relation to the April 15 Boston Marathon bombing is seen in handout photo released through the Boston Police Department Twitter page, April 19, 2013.

Map of Boston and surrounding areas.

A man looks out of his door as a SWAT team member knocks on his neighbors door as they search for the remaining suspect in the Boston Marathon bombings in Watertown, Massachusetts April 19, 2013.

Police in tactical gear surround an apartment building while looking for a suspect in the Boston Marathon bombings in Watertown, Mass., Friday, April 19, 2013.

A woman looks out a window at her home as police start to search an apartment building while looking for a suspect in the Boston Marathon bombings in Watertown, Mass., Friday, April 19, 2013.

SWAT teams enter a suburban neighborhood searching for the remaining suspect in the Boston Marathon bombings in Watertown, Massachusetts April 19, 2013.

Residents view police in tactical gear conduct a search for a suspect in the Boston Marathon bombings, Friday, April 19, 2013, in Watertown, Mass.

Manhunt underway for second Boston bombiing suspect Dzhokhar Tsarnaev.

Police officers take position during a search for the Boston Marathon bombing suspects in Watertown, Massachusetts April 19, 2013.