VAN NUYS ( — A fire tore through the roof of a two-story commercial building in Van Nuys Wednesday night, forcing firefighters to fight the flames from outside the building.

The fire was reported at 8:45 p.m. in the 7800 block of Sepulveda Boulevard, near Raymer Street, according to Erik Scott of the Los Angeles Fire Department.

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Seventy firefighters responded and knocked down the fire in 38 minutes, Scott said.

Believing there was no one trapped inside, firefighters took a defensive posture and poured water onto the building from the outside, Scott said.

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No injuries were reported.

The building appeared to house an automobile-related business, possibly a repair shop. There was no immediate word on what caused the blaze.

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