The cause of an afternoon brushfire that burned about 60 acres Saturday at Round Valley Regional Preserve, 19450 Marsh Creek Road in Brentwood, is under investigation by Cal Fire.
The fire was reported about 4:15 p.m. and had burned about 20 acres when crews arrived, the East Contra Costa Fire Protection District said.

Units from the ECCFPD, Contra Costa Fire District, the East Bay Regional Park District and Cal Fire attacked the blaze on the ground, and helicopters from Cal Fire and the Contra Costa Sheriff’s Office conducted aerial water drops.
There were no injuries or damage to structures reported.
Bay City News is a 24/7 news service covering the greater Bay Area. © 2022 Bay City News, Inc. All rights reserved. Republication, rebroadcast or redistribution without the express written consent of Bay City News, Inc. is prohibited.