PIKEVILLE, Ky. (AP) -- Crews are trying to extinguish a fire in a 700-foot-long railroad tunnel in eastern Kentucky.
Pike County Emergency management Director Doug Tackett told WYMT-TV that firefighters stopped battling the flames Monday after concerns about toxic runoff were raised due to a substance used to treat the timbers inside the tunnel.
The station reports that CSX Corporation has a contractor on the scene that is trying to smother the blaze, which has been pouring out heavy smoke and fumes.
CSX says it is working with the state fire marshal's office to try to determine a cause, but they haven't yet been able to enter the tunnel due to the blaze.
Officials say air monitoring has found no danger to area residents.
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