TUSTIN, Calif. - More than 100 firefighters have doused a fire that badly damaged a 50,000-square-foot office building in Orange County but caused only one minor injury.


The blaze broke out around 7:30 a.m. Tuesday on Irvine Boulevard in Tustin. About 120 firefighters knocked down the fire in about two hours but witnesses say about half of the building appears to be a total loss. The two-story building housed a variety of businesses.

Orange County Fire Authority Battalion Chief Kris Concepcion says one person who was inside the office where the blaze apparently started was treated for a singed face. He says others who were in the building got out safely.

The blaze sent up a huge plume of smoke that drifted across the county.

The cause of the fire is under investigation.

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