GRAFTON — State social workers overlooked for six days a police officer's faxed complaint about potential danger to a Grafton newborn, and when a social worker finally investigated, she learned that the baby had died, say three people familiar with the case.

A Grafton police officer raised concerns to the Department of Children and Families April 3 about the safety of the daughter of Andrea Lavigne, who had lost custody of one child and had a history of mental health problems and psychotropic drug use, said an investigator with knowledge of the case.