According to news reports, police have a suspect cornered in a Watertown neighborhood. News reporters have reported hearing gunfire and explosions in the last hour. The standoff began minutes after authorities held a press conference telling the people of Boston and Watertown that they could resume normal activity, but to maintain vigilance.
The standoff is the climax of a daylong lockdown that impacted the entire city of Boston, shutting down mass transportation and closing businesses. Residents were asked to stay indoors and not to allow anyone into their homes unless they were law enforcement officers. The lockdown began after a running gun battle on Thursday night.