UPDATED Thursday, July 20: The fire along U.S. 97 that forced the evacuation of some homes and businesses in Klamath Falls is no longer a threat.

Fire spokeswoman Sarah Saarloos says the blaze was being mopped up Wednesday afternoon. Residents have returned home and businesses have been reopened.

The fire, which was likely caused by human activity, scorched 27.6 acres. No structures were damaged.

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KLAMATH FALLS -- Authorities asked some homes and businesses in Klamath Falls to evacuate because of a fire along U.S. 97.

The Herald and News reports some areas were also without power Tuesday after Pacific Power cut electricity as a safety precaution.

Businesses reopened by Tuesday afternoon, but some residents remained evacuated at that point, according to fire officials.

Fire spokeswoman Sarah Saarloos says half of the 40-acre blaze was lined Tuesday afternoon and no structures were damaged. She says the fire was likely caused by human activity.

-- Staff and wire reports