( CNN) Two more people died the coming week from injuries prolonged when an SUV sped into a mob of people at an auto auction Wednesday in Billerica, Massachusetts , north of Boston.

The deaths were confirmed by Middlesex District Attorney Marian Ryan. A total of five people died and at the least five others were injured. Those killed ranged in age from 36 to 55.

A family member of one of those killed was not injured but was taken to a local hospital due to stress, she said.