Tonga Police said they received a report of the tragic incident around 4am on Saturday.
The deceased persons were the only people inside the house when the fire broke out.
The Tonga Fire & Emergency Services with Tonga Police actively attended the scene.
Kaniva News reports neighbours tried frantically to put out the fire and rescue Seluvaia Taukolo and her granddaughter Victoria Grace but were unsuccessful.
Seluvaia’s daughter Vika Taukolo shared her grief on social media.
