AIKEN --- A brush fire in Aiken County burned more than 100 acres Thursday, causing minor injuries to one firefighter and heat exhaustion to two others fighting the blaze.

The fire in an area off Snipes Pond Road, northeast of Aiken, was eventually contained about 6:30 p.m., said Aiken County Sheriff's Sgt. Dave Myers. People who were asked to evacuate their homes were allowed to return that evening.

The firefighter injured suffered minor burns to an arm.

About 45 firefighters from several agencies spent much of the day fighting the brush fires that threatened, but did not damage, nearby homes. Authorities said they weren't sure how the fires started but noted that high winds and low humidity helped to spread the flames.

Considering the acreage covered, Sgt. Myers said, it was one of the larger brush fires he has seen in the area.

"It could take a couple of days before its completely out," Sgt. Myers said.

Firefighters from Aiken, Couchton, New Holland, Wagener and the South Carolina Forestry Commission fought the blazes, which forestry officials said were actually several smaller fires located near one another.

Scott Hawkins, a public information director for the South Carolina Forestry Commission, said more such fires have been occurring in the state lately. He attributed them to high winds and low humidity.

"And we haven't had a lot of rain lately."

Staff writer Adam Folk contributed to this article.