A San Diego Gas & Electric substation exploded near Bonita late last night, bursting into a fire that lasted nearly five hours.
At around 11 p.m., there was a large blast at the transformer, near the intersections of state routes 125 and 54. The building was soon engulfed in flames.
Fires at electrical transformers typically take a while to contain, since firefighters have to use foam instead of water.
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