Crews contain 25-acre fire burning at Tesoro Refinery in Contra Costa Co.

MARTINEZ, Calif. (KGO) -- Crews have contained a 25-acre fire burning on Tesoro Refinery property in unincorporated Contra Costa County near Concord and Martinez.

The fire was contained at 4:15 p.m.

The blaze did not interrupt any work at the refinery and no evacuations were ordered.

The cause of the fire is under investigation.