Maui fire investigators said today that arcing transmission lines may have started the six-acre Kula brush fire Monday.

Fire spokesman Lee Mainaga said residents heard popping sounds from the lines and investigators think that high winds that were occurring the day the fire broke out may have caused accidental arcing, starting the fire.

The fire, which began Monday was 100 percent contained Wednesday morning.

As of Wednesday afternoon, the fire is not extinguished and hot spots are continuing in the gulch.

Fire damage to the roof of a home at 274 Cooke Road amounted to $50,000, while two other structures that were threatened suffered no monetary damage, officials said.

“Fire crews did an outstanding job in protecting these structures and saving them from the approaching brush fire,” Mainaga said.