CLAIRTON, Pa. (WHTM) - An explosion at a U.S. Steel coking plant near Pittsburgh on Monday left people trapped under the rubble, officials say.

There were no confirmed fatalities yet at the Clairton Coke Works, said Abigail Gardner, director of communications for Allegheny County.

The Allegheny County Emergency Services said a fire at the plant started around 10:51 a.m., adding that it transported five people. The agency did not provide any more details on those people transported and would only say it was an “active scene.”

The Clairton Coke Works, a massive industrial facility along the Monongahela River south of Pittsburgh, is considered the largest coking operation in North America.

Pennsylvania Gov. Josh Shapiro said the Pennsylvania State Police and Pennsylvania Emergency Managem

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