Update: Mutual Aid/mateo Fire in San Diego County - June 12 status

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Updated: 2:49 p.m. June 12

First discovered: 17 days ago, 5:52 p.m. May 26

Initial location: San Diego County, Calif.

Fire type: Wildfire

Fire name: Mutual Aid/mateo

Mutual Aid/mateo Fire initially started 5:52 p.m. May 26 in in San Diego County, California.

It has been burning on federal land managed by the U.S. Department of Defence for 17 days. At this time, there is no data on the containment status of the fire and the cause has yet to be determined.

Source: National Interagency Fire Center

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This story was originally published June 12, 2026 at 3:11 PM.