The infant who was struck by a car as her mother carried her across Humboldt Avenue in Roxbury Thursday night as died, according to Boston police.
The mother and the 5-month-old daughter, who have not been identified, were struck just before 9 p.m. Thursday. Both were taken to Boston Medical Center in critical condition with severe head trauma.
The investigation into the incident is ongoing. Police say they're trying to determine if speed was a factor in the crash. The driver remained at the scene and has not been charged.