Las Vegas authorities are investigating an early October house fire as a murder-suicide, according to Wednesday reports.

Police Lt. Ray Spencer told Fox 5 that investigators have determined that the Oct. 8 fire at a western suburb of Las Vegas was intentionally set. He said forensics indicated the fire was set with gasoline.

Firefighters responded to the fire around 8:20 a.m. Upstairs they found 47-year-old Renai Palmer and her 6-year-old son Gavin Palmer Murray, the Clark County Coroner’s Office said.

The fire spread quickly, The Las Vegas Sun reported. Officials cited by the paper said the mom and her son died at an area hospital.

The child's uncle was taken to the hospital for treatment of smoke inhalation and released, fire officials said in a press release.

FLORIDA MAN, 94, SAYS HE TRIED KILLING HIMSELF IN MURDER-SUICIDE BUT GUN ‘MALFUNCTIONED’

Gavin’s father, Sean Murray, said he harbored a suspicion that Renai was responsible for the fire. He told Fox 5 that the room where the fire started was locked.

CLICK HERE TO GET THE FOX NEWS APP

“It’s the answer I’ll never get,” he told the station. “I was questioning if it was an accident or not. … Most of my pain is sorry and I miss my boy.”