NEW YORK (AP) — An 8-month-old boy being cared for by his grandmother was bitten on the head by his family's dog on Thursday and killed, police said.

Police and Emergency Medical Services were called to the family's Brooklyn home shortly before 2 p.m. Andrew Stein, an only child, was rushed to a hospital, where he was pronounced dead about an hour later, police said.

No one had been charged in the boy's death as of Thursday evening. The Doberman pinscher was tranquilized and taken to an animal care center.

Police were investigating. They said it was too soon to determine what would happen to the dog.

Neighbors said the dog was docile and friendly and would allow them to pet it. They said they felt sorry for the boy's grandmother.