Published: Oct 26, 2010 4:58 PM EDT
Updated: Oct 26, 2010 1:58 PM EDT

JACKSONVILLE, Fla. (AP) - A newborn baby is dead after being attacked by a pit bull in Jacksonville.

Police say they were called to the baby's home about a dog attack late Sunday.

The newborn died at a hospital. Authorities have not released the baby's name.

Department of Children and Families spokesman John Harrell tells The Florida Times-Union that the state agency is working with police to investigate whether the baby was being supervised and whether the dog previously showed aggressive behavior.

City animal control officials tell WJXT-TV that the young dog has been euthanized.