SAN CARLOS (CBS SF) – Firefighters responded to a 1.5 acre grass fire at Arguello Park, in San Carlos Monday night.

The fire broke out around 9:35 p.m. at the park, located at 260 block of Wellington Drive, according to the San Mateo County Fire Department.

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No structures were threatened and there were no reports of injuries

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Firefighters tweeted they would remain on the scene for several hours “mopping up.”

The cause of the brush fire is under investigation.

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