Thursday’s three-alarm fire in unincorporated Martinez, near Las Juntas Elementary School, flared up Friday after firefighters remained on scene overnight.
Contra Costa County Fire Protection District spokesman Steve Hill said investigators haven’t pinpointed the cause of the 17-acre blaze, which started shortly after 4 p.m. near the 4100 block of Pacheco Boulevard.
“We had crews out all night monitoring the fire and go out today for a number of small flare ups,” Hill said Friday. “We are expecting this will be a multi-day incident.”
Firefighters stopped the fire’s forward progress about an hour after it sparked Thursday. The fire district got help from Cal Fire and Contra Costa County Sheriff’s Office helicopters dropping water on the blaze, which was stopped before reaching any structures.