At least 20 homes have been destroyed and one firefighter hospitalized after a fire, dubbed the Coastal Fire, erupted in Orange County, CA, Orange County Fire Authority Chief Brian Fennessy told NPR.
CBS Bay Area said the firefighter was hospitalized due to a medical condition in the field.
The cause of the fire, which stretched about 200 acres as of Thursday morning, remains under investigation.
Orange County Fire Authority Public Information Officer Capt. Greg Barta said about 550 firefighters were battling the fire.
"Crews worked diligently and very hard throughout the night and made great progress," Barta said in a video on social media Thursday morning. "We expect that to continue today."