Record Fire in Riverside County determined to be "human caused": Cal Fire

Firefighters contained a fire that broke out in Riverside County last Sunday as a heat wave gripped Southern California, bringing triple-digit heat to the Inland Empire.

The Record Fire was contained Sept. 5, according to Cal Fire. It burned 517 acres. 

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The cause of the fire was listed as "human," Cal Fire disclosed.

The fire broke out near Soboba and Gilman Springs roads on Sunday around 2 p.m. The area is adjacent to the Golden Era Golf Course in the San Jacinto area. 

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Amid the blazing temperatures, six firefighters were treated for what authorities described as "minor medical symptoms." 

"Overnight, the fire exhibited minimal growth, allowing firefighters to make significant progress in increasing containment. Firefighters will continue to work throughout the day, strengthening containment lines and addressing any remaining hotspots," fire authorities said in an update Monday morning. 

Evacuation warnings were issued in the area earlier in the week, but had been lifted by Tuesday night.

"Please use caution when returning to the area as fire resources continue working to fully contain the fire," CAL Fire said.