PITTSBURG (CBS SF) – Fireworks started at least two of several brushfires Friday night around Contra Costa County, while another burned down on a barn, the Contra Costa Fire District said.

Crews from the district and local jurisdictions have been called Bto fires in Pittsburg, Bay Point, San Pablo and Rodeo, officials said.

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Crews that extinguished the Pittsburg fire determined fireworks were the cause.

The Contra Costa Fire District said fireworks were also the cause of a grassfire that started after 10 p.m. between Levee Road and the railroad tracks in Bay Point. Trains have been slowed through the area for safety.

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The Rodeo-Hercules Fire District was assisted by the Pinole Fire Department, the county fire district and the Crockett-Carquinez Fire Department at a blaze reported about 10 p.m. that burned down a barn at the historic Claeys Ranch in unincorporated Rodeo. The cause of that fire has not been determined.

A vegetation fire was reported at 18th Street and Dover Avenue near Dover Elementary School n Pablo about 9:30 p.m., but further details weren’t immediately available.

The Contra Costa County Fire Protection District has responded to at least 13 fires since Friday night.

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