LIVE OAK (CBS13) — A vacant building at the Diamond Walnut Growers facility was the site of a dramatic fire Friday morning.

The fire appears to have started just before 8 a.m. at the facility along Juniper Street in Live Oak. The Sutter County Sheriff’s Office says the building was fully engulfed. No one was believed to be inside the building.

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Residents in the area immediately around the facility were evacuated, the sheriff’s office says.

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Firefighters brought the flames under control. No neighboring houses were damaged and no injuries have been reported.

Exactly what started the fire is under investigation.

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Highway 99 remained closed in the downtown Live Oak area through Friday morning. The road was reopened around 1 p.m., but drivers should expect some residual delays as traffic recovers.