A fast-moving wildfire exploded to roughly 10,200 acres near the Los Angeles County community of Castaic Wednesday morning, prompting mandatory evacuation orders and road closures, authorities said.

Firefighters are battling a new brush fire that erupted in San Diego County near the U.S.-Mexico border, as they also race to contain the Hughes Fire near Castaic Lake.

The latest wildfire in Los Angeles County, dubbed the Hughes Fire, has already burned over 5,000 acres in about two hours near the suburb town of Castaic. According to CNN, residents were ordered to evacuate shortly after the fire broke out on Wednesday in Castaic,