But it's not clear what caused the tragedy that played out over the weekend.
Acting Essex County Prosecutor Carolyn Murray says the 8-year-old boy was found late Saturday night outside the New Community Commons building. He was taken to a hospital, where he remained in critical condition Monday.
Murray says the body of 26-year-old Othelia Johnson was found late Sunday morning on a nearby street. An autopsy determined that Johnson died from stab wounds to the heart and left lung.
Authorities say the investigation is ongoing, but it appears Johnson's wounds were self-inflicted.
The child's name was not released due to his age.
Get Eyewitness News Delivered