A sixth first responder has died battling this years wildfires in California, fighting what has become the largest wildfire in Californias history.

The firefighter, who was from Utah but has not been named, was fighting the Mendocino Complex blaze along the Mendocino National Forest when he suffered fatal injuries on Monday, the California Department of Forestry and Fire Protection (Cal Fire) said.

Were extremely heartbroken for this loss. We are dedicated to investigating what happened and will release more information as it becomes available, Mendocino Complex incident commander Sean Kavanaugh said at an evening press conference .