A woman is dead after an early morning fire at her home in Nutley.Fire officials say the upper floor of the home on Harrison Street was engulfed in flames when they arrived. Officials say the blaze spread after starting in the back of the home, which was split into two apartments.The victim's husband was not home at the time of the fire. According to the husband, a dog was also killed in the blaze.Investigators are trying to determine what caused the fire.