Gunman Opens Fire on Cambridge Traffic; Two Critically Injured

On Monday afternoon, a man armed with an assault-style rifle opened fire on vehicles along Memorial Drive in Cambridge, Massachusetts, critically injuring two individuals. The suspect, identified as 46-year-old Tyler Brown of Boston, was apprehended following an exchange of gunfire with a Massachusetts State Police trooper and an armed civilian.

The incident began shortly after 1:00 p.m. when Cambridge Police received a call from Boston Police reporting that Brown, who had been observed acting erratically and was believed to be in possession of a rifle, might be in Cambridge. Upon arrival, authorities encountered an active shooter situation with Brown firing erratically at passing vehicles. Two male victims in separate cars were shot and are currently being treated for life-threatening injuries at Boston hospitals. The trooper's cruiser was also struck by gunfire during the confrontation. Brown was treated for gunshot wounds at the scene and transported to a hospital. He is expected to be charged with two counts of armed assault with intent to murder, among other charges.

Authorities have not identified a motive for the shooting. The area around Memorial Drive near the River Street Bridge, a heavily traveled road adjacent to the Charles River and close to Harvard University and the Massachusetts Institute of Technology, was temporarily closed as investigators processed the scene. Residents were advised to avoid the area during the investigation.