RENO, Nev. - The estimated number of homes destroyed in a wind-fueled wildfire has more than doubled to a total of 32, but Gov. Brian Sandoval said it's a miracle scores more weren't lost.

Reno Fire Chief Mike Hernandez said a re-evaluation of the 2,000-acre burn on Saturday found much more destruction and damage than initially reported.

The blaze spread by gale-force winds and ripped through the Sierra foothills early Friday, forcing the evacuation of nearly 10,000 people. Most started returning to their homes Saturday afternoon.

The governor said after a helicopter tour of the area that while the loss of homes was a tragedy, the 400 firefighters on the lines are heroes for saving more than 4,000 houses that could have burned.

Investigators said arcing power lines likely caused the wind-fueled wild fire.

Hernandez said the 2,000-acre fire is now 65 percent contained.

He expected that to climb to 90 percent or better by today. Hernandez said the evacuees were being allowed to return to their homes.

Hernandez said there's no official cause yet, but all signs point to the power lines. He said investigators ruled out the possibility that teenage partiers or a homeless campfire was to blame.