Maui fire investigators have completed their investigation into the cause of the Maalaea fire that burned for a week earlier this month and  charred an estimated 6,200 acres. But investigators were unable to confirm what started the blaze, a Maui County spokeswoman said.

Investigators classified the cause as undetermined.

The fire was reported at 10 p.m. on the night of June 7 and was not extinguished until June 14. Guisty  winds and the remote location of the fire in the West Maui mountains made containing the fire difficult. The federal government will help pay for the cost of fighting the fire.