6.0-magnitude earthquake reported near Napa, California

A large earthquake caused significant damage and left three critically injured in California's northern Bay Area early Sunday, igniting fires, sending at least 87 people to a hospital, knocking out power to tens of thousands and sending residents running out of their homes in the darkness.

>> Damage photos: Large earthquake shakes Northern California

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According to the U.S. Geological Survery, the quake was centered in American Canyon, just south of Napa, at 3:20 a.m. PDT.

The Associated Press contributed to this report

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