Cal Fire says its burned through 250 acres in the U-S, and 100 acres in Mexico.
Firefighters were battling a large wildfire that has crossed over the Mexican border from San Diego County, officials said Sunday.
The blaze erupted for unknown reasons around 12:35 p.m. Saturday near Buttewig Canyon in the South Slope of the Otay Mountain Wilderness and border area, according to an incident report from Cal Fire.
There is no structure threat as the fire is burning in a rural area on the international border, with 250 acres burning on the U.S.-side and about 150 acres burning on the Mexican side, Cal Fire Public Information Officer Brent Pascua told NBC 7 San Diego. By Monday morning, the fire was 60% contained on the U.S. side.
Fire crews have a good handle on the fire, are employing a technique known as "back burning," and are taking advantage of the marine layer to help with fire containment before the weather gets hotter, Pascua told NBC 7.
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Fire activity on Saturday was low due to more humidity in the air from the marine layer. Firefighters will continue to work on increasing containment throughout the day, Cal Fire reported.
A total of 60 personnel are currently assigned to the fire, including five engines, two hand crews, two water tenders and three unnamed resources.
