FILE PHOTO: A firetruck rushes past flames that overran a road at the River Fire (Mendocino Complex) in Lakeport, California, U.S. July 31, 2018. REUTERS/Fred Greaves/File Photo

(Reuters) - The Mendocino Complex became the largest wildfire in California state history on Monday as it raged at the southern tip of the Mendocino National Forest, state wildfire officials said.

The Mendocino Complex Fire, made up of two separate conflagrations that merged, has burned 283,800 acres (114,800 hectares) and was still growing, California Department of Forestry and Fire Protection said.

The complex took over the top spot from the Thomas Fire, which burned 281,893 acres in Santa Barbara and Ventura counties in 2017.