The alleged gunman was identified as a Boston man. He allegedly used an assault-style rifle to shoot randomly, sending drivers fleeing from their cars.

As people fled their cars along the busy riverfront road, a state trooper and an armed civilian ran toward the gunman and ...

Cambridge police said its officers first were alerted to the apparent incident at about 1:30 p.m. Less than an hour later, the department posted a notice on Facebook saying there was "no on-going ...