FULLERTON — A three-alarm fire Thursday quickly spread through the air conditioning system of a two-story building, gutting several offices and forcing the evacuation of more than 160 people.
The lunch-hour blaze filled the 50,000-square-foot office building at 690 Langsdorf Drive with smoke and cut electricity to the site's 25 tenants, which include legal and health professionals, authorities said.
There were no injuries reported and the cause of the fire is under investigation. Fullerton Police Sgt. Glenn Deveny said the blaze may have begun within the building's air conditioning machinery.
As building employees and curious students from the neighboring Cal State Fullerton campus watched, firefighters contained the blaze within 45 minutes. But authorities closed the building for the day to ensure the ducts were completely clear of flames.