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Los Angeles County Fire Department crews have halted the growth of a brush fire on Catalina Island that burned 17 acres Thursday afternoon.

The Middle Fire was reported about 1:15 p.m. in the Black Jack campground area of Avalon, according to the Fire Department’s incident page.

Helicopters with the department’s air operations unit were assisting firefighters and L.A. County lifeguards.

“In addition to water drops, we’ll transport firefighters and heavy equipment operators from the mainland,” a tweet from the air unit said.

The blaze comes during an unseasonably warm spell that also brought gusty winds and fire dangers. Winds were blowing about 10 mph in the area and had the potential to spread the fire, fire officials said.

No structures were being threatened and no injuries have been reported.