The Honolulu Fire Department’s investigator has determined the early morning fire Monday at a vacant Punchbowl area house was intentionally set.

The fire at 317 Auwaiolimu St. started at the rear entryway, and the cause was incendiary, HFD said in a news release.

HFD said that neighbors reported squatters were frequently on the property. The house was unsecured, and a previous fire in 2020 had damaged the structure.

A neighbor who reported the fire 12:16 a.m. Monday smelled smoke and saw flames at the back of the single-story house. Firefighters brought the blaze under control at 12:35 a.m.

Damage is estimated at $120,000 to the building.

All occupants escaped uninjured. A 40-year-old woman fainted from unknown causes and was treated by Emergency Medical Services.

HFD referred the incident to the police department for further investigation.