The Brief

An explosion occurred at U.S. Steel’s Clairton Coke Works around 10:51 a.m., leaving people trapped under rubble.

A spokesperson said one person died in the explosion and two were currently believed to be unaccounted for. Multiple other people were treated for injuries.

The facility, the largest coking plant in North America, remains an active emergency scene with limited details released.

CLAIRTON, Pa. - An explosion at a U.S. Steel plant near Pittsburgh has left one dead and dozens injured or trapped under the rubble, with emergency workers on site trying to rescue them.

The news was initially confirmed by Abigail Gardner, the director of communications for Allegheny County.

Here's what we know so far:

2:30 p.m. ET: Pennsylvania Gov. Josh Shapiro said on Monday that h

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