Text from the email alert:
The following is a message from ALERTBoston:
City-wide shelter-in-place is advised. As this investigation unfolds, we are advising all city-wide to shelter-in-place. Please understand we have an armed and dangerous person(s) still at large and police are actively pursing every lead in this active emergency event. Please be patient and use common sense until this person(s) is apprehended. We will continue to update the public with more information as it becomes available. All MBTA service remains suspended at this time.