SAN DIEGO (KGTV) - Cal Fire is battling a brush fire near East San Diego County on the U.S.-Mexico border.
The flames broke out after 11 a.m. near the Cottonwood Creek area off SR-94, not far from Barrett Junction.
100 acres burned in the U.S., with the fire spreading to 650 acres in total by 7:30 p.m. It is 10 percent contained.
The fire has a moderate rate of spread and was burning light brush, Cal Fire confirmed to 10News.
There is no immediate threat to structures, officials said.
Images from an SDG&E camera appeared to show heavy smoke over the area.
Check 10News Pinpoint Weather conditions
East County is under an Excessive Heat Warning due to high pressure. Fire danger is also high through the weekend due to the threat of dry lightning, according to 10News meteorologist Megan Parry.
Cal Fire has not determined the cause of the brush fire.