OAKLAND, Calif. (KRON) — Forty firefighters responded to a two-alarm commercial fire that occurred around 4 a.m. Saturday, according to Oakland fire.

The fire, which originally started outside in an encampment, made its way into a single story vacant commercial building in the 2300 block of San Pablo Avenue.

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Just after 6 a.m., Oakland fire reported the fire was under control and fire units were starting to be released from the scene.

No injuries were reported. The cause of the fire is currently under investigation.