Authorities say an intense, fast-moving fire has destroyed four homes in Perth Amboy and seriously injured
three people.

Dozens of people were also left homeless by the massive blaze, which started around 4 a.m. Sunday. Two residents -- a father and son -- initially were unaccounted for, but authorities eventually located them and learned they weren't home when the fire began.

The three injured people -- a couple and their infant daughter -- suffered burns and were hospitalized in serious but stable condition.

Roughly 75 firefighters battled the stubborn blaze, which damaged several other homes and burned for several hours before it was brought under control.

The cause of the fire remains under investigation. Witnesses said it appeared to be "raining ashes" as crews worked to extinguish the massive flames.

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