A routine Monday afternoon on Memorial Drive in Cambridge, Massachusetts, turned into an active shooter emergency when, shortly after 1.30 pm, 46-year-old Tyler Brown allegedly walked into the road with an assault-style rifle and opened fire on passing cars, before being shot by a State Police trooper and an armed civilian, according to investigators.
Authorities said the Cambridge shooting unfolded along a busy stretch between River Street and the Pleasant Street extension, a route that runs beside the Charles River and past Harvard's campus.
