SAN JOSE (CBS SF/BCN) — Firefighters quickly brought a 10-acre grass fire under control in South San Jose on Sunday morning.

The fire, reported about 9:15 a.m., burned dry brush in a field near Singleton Road and Locke Drive, west of Coyote Creek, fire officials said. It was deemed under control about an hour later.

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The blaze didn’t threaten any structures and no injuries were reported.

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As of 11 a.m., crews remained at the scene to mop up and check for hotspots. The cause is under investigation.

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Even though temperatures are cooler on Sunday, vegetation around the region is very dry and fire officials warn residents to be cautious with outdoor activities.