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A natural gas line in Adair County Kentucky exploded Thursday and totally destoyed two nearby homes.

Two people were briefly hospitalized after the explosion.

The buried pipeline owned and operated by Columbia Gulf Transmission blew up around 1 a.m.

It left a crater 60 feet deep by 50 feet wide, county EMA director Greg Thomas said.

Three homes caught fire and two of them were completely destroyed, along with barns and cars, Thomas said.

Twenty other homes were evacuated.

Officials declared a state of emergency for Adair County.

The county is in south-central Kentucky.

One of the injured people had burns and another had undetermined injuries. Both were later released.

The line was buried  20 feet underground.

It runs from the Gulf of Mexico to New York.

Columbia Gulf Transmission said the cause of the explosion was unknown.