Middlesex County Prosecutor Bruce Kaplan said Friday that the death of 44-year-old Balwinder Kaur of the Avenel section of Woodbridge Township is being investigated as a homicide.
Kaur was physically attacked before the fire was reported, Kaplan said.
Investigators are looking into whether it was intentionally set to try to cover up the crime.
Firefighters went to the home shortly before 5 p.m. on Monday after a passerby saw flames coming from the building. They discovered the victim inside. She was pronounced dead at the scene.