TUCSON, Ariz. (AP) -- Fire crews are demobilizing as a wildfire that has charred 2,177 acres in southern Arizona's Baboquivari Mountains comes closer to full containment.

The Solano fire was 85 percent contained as of early Tuesday. Fire officials expect to fully contain the fire by Thursday.

Fire spokesman Bill Watt says some resources, including all single-engine air tankers and heavy helicopters, have been let go.

The fire started Friday morning about seven miles south of Kitt Peak on the Tohono O'odham Indian Reservation, about 20 miles east of Sells.

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