A family of eight was displaced by an early-morning fire that threatened power lines in City Heights Thursday.
Neighbors told San Diego Fire-Rescue they heard an explosion at about 12:45 a.m., when the fire broke out at the home just off Orange Avenue.
The family, three adults and five children, were able to escape the fire, SDFD's Chad Willenberg said.
One man could be seen in the back of an ambulance but it was unclear if he was taken to the hospital.
Flames tore through the single-family home and up into the attic. Crews used chainsaws to cut through the home's roof to ventilate the smoke.
At one point, flames threatened power lines and San Diego Gas & Electric was called to secure a power pole, Willenberg said.
Fire investigators are looking into what caused the fire and what the explosion sound neighbors heard was.
The Red Cross was assisting the family with temporary housing.
It was not immediately known how much damage was caused.
No other information was available.
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