SIOUX CITY, Iowa - A Sioux City family of five has escaped what could have been a deadly explosion at their home.

Authorities believe natural gas caused the blast Tuesday night.

The homeowner, Cuong Phung, his three children, ages 1, 6 and 9, and his mother-in-law escaped without suffering serious injuries. His mother-in-law and children were taken to a hospital as a precaution.

The blast, which happened about 6:15 p.m., shook the split foyer home off its foundation.

Phung says there was a "big boom," and the ceiling fell down. He says there was a repairman at the house Tuesday afternoon working on the air conditioning.

Neighbor Kelsey McCann says the family is "lucky to be alive."

The state fire marshal is investigating.


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