The cause of a fire that started in a vehicle and burned down a home in San Carlos was ruled as “undetermined,” according to the Hidalgo County Fire Marshall.

Hidalgo County Fire Marshal Homero Garza said the July 2 fire started in the engine of the family’s Ford Explorer. The vehicle was in a car port and the fire spread to the home.

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As previously reported, Esmeralda Santiago said she recalled hearing a loud boom in her yard when the fire started, and ran outside to find the SUV engulfed in flames.

The family was left with nothing following the fire.