Maui fire officials are investigating the cause of a house fire that killed a 77-year-old woman Friday morning. The fire was reported at 5:44 a.m. on Kanani Road, just off Piilani Highway in Kihei. When firefighters arrived, the fire had consumed half the house. They brought the fire under control at 7 a.m. and that's when they discovered 77-year-old Hazel Jones. Her death was classified an unattended death. Damage to the house was estimated at $300,000. The cause of the fire was accidental.