A few days later, officials with the Oklahoma City Police Department said the victims did not die from the fire. Instead, they say they suffered injuries consistent with homicide, adding that their injuries occurred before the fire was set.
However, the details about how they died were not very clear.
On Wednesday, NewsChannel 4 received Mason's autopsy report, which said that she died from sharp force trauma and blunt force trauma across her body, adding that she was stabbed at least 32 times.
Her manner of death was ruled a homicide.
On Friday, the medical examiner's office provided NewsChannel 4 with 8-year-old Keagon Bruce's autopsy.
The report states that Bruce died from sharp force trauma, smoke inhalation and thermal injuries from the fire.
Authorities say Bruce suffered several sharp force trauma injuries to the head, neck and upper extremities.
Officials say Bruce suffered two stab wounds to the back of the head, and several others to the sides and front of the face.
The report states that one stab wound to the right side of the head passed through the skull and into his brain.
He also suffered several cuts to the neck and arms.