A suburban Boston high school was placed on lockdown with Massachusetts House Speaker Robert DeLeo and another state lawmaker stuck aside.
A New Hampshire middle school was placed in lockdown on Monday after a student found a shotgun shell inside a locker room.
Police have arrested a man after it was reported he had a gun at an apartment complex, forcing a temporary lockdown at a nearby elementary school.
A school in Mattapan was put in safe mode late Thursday morning because a coyote was spotted wandering around outside.
Lincoln-Sudbury High School was temporarily placed into lockdown on Monday after a teacher found two shell casings in the school.
Two schools in Burlington were placed in lockdown on Wednesday for a few hours while police investigated a bank robbery nearby.
A drive-by shooting forced two Lawrence schools into a lockdown for a short time Monday.