Firefighters on Friday battled a brush fire in eastern Contra Costa County amid triple-digit temperatures.
Friday's Marsh Creek Road fire south of Brentwood was at 100% containment, Cal Fire announced on Twitter at 5:22 p.m.
It remained at 45 acres.
Fire crews responded Friday afternoon to the second wildfire in as many days in the same area of East Contra Costa County.
Fire officials initially posted on social media shortly after 1:15 p.m. about a 50-acre wildfire in the area of Marsh Creek Road and Walnut Boulevard south of Brentwood.
Nearly an hour later, Cal Fire said a more exact estimate of the blaze is that it has burned 45 acres and was 10 percent contained.
No information about the cause of either fire was immediately available.
A brush fire broke out in the same area Thursday afternoon.