Boston authorities suspended all mass transit and urged people to stay indoors Friday as they searched for the second of two suspects in the Boston Marathon boming Monday. The first suspect was killed in a shootout overnight.
Police presence grows in the neighborhoods of Watertown, Mass., Friday, April 19, 2013, as a massive search involving hundreds of heavily armed law enforcement officials continues for one of two suspects in the Boston Marathon bombing. A second suspect died in the early morning hours in a car chase and gun battle overnight that left one of them dead and his brother on the loose, authorities said Friday. (AP Photo/Craig Ruttle)