A gunman opened fire on passing vehicles along the busy Memorial Drive in Cambridge on Monday afternoon, critically injuring two drivers before a Massachusetts State Police trooper and an armed civilian quickly stopped him in a dramatic daylight confrontation.
The suspect, identified as 46-year-old Tyler Brown of Boston, allegedly walked down the middle of Memorial Drive near River Street around 1:20–1:30 p.m., firing an assault-style rifle at random cars. Witnesses described hearing dozens of shots, with authorities estimating Brown fired between 50 and 60 rounds total, striking at least a dozen vehicles.
Two drivers suffered life-threatening injuries, including an MBTA paratransit van operator. No officers or the armed civilian were hit.
A Massachusetts State Police trooper and a former Marine who was caught in traffic engaged Brown within seconds of the shooting erupting. Both fired, striking the suspect multiple times in the arms and legs. Brown was treated at the scene and transported to a Boston-area hospital, where he remains in police custody in the ICU.
