Mary Childs, 82, a longtime Aiken resident, and her 3-year-old granddaughter Arbrielle Douse died in the fire at 644 Pinecrest Ave., Aiken County Coroner Tim Carlton said.
Family members at the scene said the fire began about 12:30 a.m.
According to a statement from the Aiken County Sheriff’s Office, the 8-year-old was able to escape the home. Firefighters with the Aiken Department of Public Safety discovered the two victims inside the home hours after the fire was put out.
Autopsies revealed both victims died from carbon monoxide poisoning and thermal injury, Carlton said.
The sheriff’s office said there will be no criminal charges.