National City fire
Firefighters battle the three-alarm blaze in National City. Courtesy OnScene.TV

A three-alarm fire that began late Monday night destroyed a large commercial building in National City.

Firefighters were called at 11:05 p.m. to the Western Hose & Gasket building at Harding Avenue and 30th Street as flames spread throughout the structure and explosions could be heard.

Over 100 firefighters from National City, Chula Vista and San Diego fought the blaze, with efforts to bring it under control continuing into the early hours of Tuesday.

Officials said there is danger that the building will collapse, and the Bureau of Alcohol, Tobacco, Firearms and Explosives would be called to assist in the investigation of the fire.

No injuries were reported.

OnScene.TV contributed to this article.

Chris Jennewein is Editor & Publisher of Times of San Diego.