The National Fire Authority is expected to finish their investigation in relation to a fire incident in Bulileka, Labasa last month by the end of this week.
NFA says once the investigation is completed they will forward the file to Police.
Three children aged 6, 9 and 13 years died after they were trapped inside the house.
The fourth child, an 11‑year‑old boy was able to escape but he sustained 10% burns.
The house belonged to a 43‑year‑old man and police say both parents were said to be at work when the fire started.