Boston police are investigating a pair of pedestrian deaths.
An 88-year-old woman was struck and killed in the city's Roslindale neighborhood at about 5 p.m. Tuesday.
The driver, a 24-year-old woman, is scheduled to be arraigned Wednesday on a charge of motor vehicle homicide.
Police say a man was struck and killed in Dorchester at about 8 a.m. Wednesday.
A driver was also arrested in that case, although the charges were not immediately clear.
The names of the victims have not been released.