Fire crews are astatine the country of a brushwood occurrence Sunday greeting successful the Byron country that has burned astir 40 acres, Cal Fire said.
The occurrence was reported astir 9:20 a.m. successful the 7900 artifact of Vasco Road, connected the borderline of Contra Costa and Alameda counties.
The California Highway Patrol closed Vasco Road astatine Camino Diablo to owed to dense fume from the blaze and issued a Sig-Alert for the area.
Cal Fire is responding with aerial and crushed crews, according to a station connected societal media.
Information astir containment oregon however the occurrence was sparked was not instantly available.