BOSTON -- Authorities in Boston suspended all mass transit and warned close to 1 million people in the entire city and some of its suburbs to stay indoors as the hunt went on. Businesses were asked not to open. People waiting at bus and subway stops were told to go home.
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From Watertown to Cambridge, police surrounded various buildings as they searched for Suspect No. 2. Around 8:30 a.m., officers sprinted toward a house in Watertown, and reporters were pushed back more than a block as helicopters buzzed overhead. SWAT teams, FBI agents and armored vehicles assembled at the scene as sharpshooters across the street trained their guns at the house. They left the house around 9:30 a.m., and a few dozen Boston police officers with assault rifles and helmets then filed into the backyard of a red brick building down the street.