Two workers were burned and taken to Wheeling Hospital.

WHEELING, W.Va. (AP) — An explosion and fire at a truck cleaning facility in West Virginia has injured two employees, officials said.

The explosion was reported at a garage Monday night while a tanker was in the process of being cleaned, Ohio County Emergency Management Agency Director Lou Vargo told news outlets.

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Two workers were burned and taken to Wheeling Hospital, he said. The extent of their injuries wasn’t clear.

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The building where the fire occurred was a complete loss, Vargo said.

It wasn’t immediately clear what caused the explosion.

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