The building fire, located on the 2100 Block of South Yale Street, was reported at approximately 1:53 p.m. to the Orange County Fire Authority.
At least 85 firefighters were on scene working on putting out the flames. Black smoke and flames were seen rising from the building.
Currently assisting #OCFA on fire located at the 2100 Block of South Yale Street . Please stay away from this area. More details to follow #SAPDPIO #SantaAnaPD #publicadvisory pic.twitter.com/ePoohNZVls— SantaAnaPD (@SantaAnaPD) August 7, 2018
By around 3 p.m., most of the active flames appeared to be extinguished, and firefighters were able to stop it from spreading to other structures.
One person in need of medical attention was treated and transported. The status of the person was not immediately known.
The Santa Ana Police Department is urging people to stay away from the area. The cause of the fire is under investigation.