The search for one of the Boston Marathon bombing suspects — the man seen wearing a white baseball cap — this morning led to the sudden shutdown of the MBTA’s entire network of commuter rail, bus, and subway services.
State authorities also asked people who live in Watertown, Waltham, Newton, Belmont, Cambridge, and Allston-Brighton to stay home and for businesses in those cities and towns to stay closed.
“We are asking you to stay indoors, to stay in your homes for the time being,’’ Kurt Schwartz, who leads the state’s homeland security department, said at a 6 a.m. press conference today. “We are asking business in those areas to cooperate and not open today until we can provide further guidance.’’