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Firefighters in Santa Barbara County were battling a vegetation fire on Sunday afternoon that prompted evacuations and threatened structures, officials said.

The fire, which was named the Drum Fire, started at about 12:50 p.m. in the area of 7369 W. Highway 246, west of Buellton, the Santa Barbara County Fire Department reported.

As of 5 p.m., the fire had charred about 600 acres and was 10% contained. Fire officials said 100 structures were threatened when the fire broke out, but none were damaged.

Fire department crews made water drops on the fire from the air, as well as attacked the blaze from the ground.

The Santa Barbara County Sheriff’s Department issued evacuations for the area of Domingos Road to Highway 101, excluding the Buellton city limits.

By 6 p.m., the evacuation orders were downgraded to evacuation warnings.

There were no reports of injuries.

Correction: A previous version of this article said the fire was in San Bernardino County. This story has been updated to reflect the correct area of the fire in Santa Barbara County.