DRENNEN, W.Va (WOWK) -- Nicholas County Commission President D. Craig Chapman says at least one person is unaccounted for and believed trapped about 3/4 of a mile under the mountain at the Rolling Thunder Mines in Drennen, WV.

Chapman also says the county's Office of Emergency Services director gave an update, saying crews were pumping water out around 10 p.m. trying to locate the miner.

Officials also say the mines started to flood around 1 p.m. All other miners are accounted for.

Search and rescue efforts continue into the nighttime hours.

This is a developing story.

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