One person has died and dozens are reportedly injured or trapped under rubble following an explosion at a U.S. Steel plant near Pittsburgh on Monday, an Allegheny County emergency services spokesperson told the Associated Press. A fire erupted at Clairton Coke Works around 10:51 a.m. ET, the AP reported.

At least one person has died, and one person remains unaccounted for, while at least 10 people have been injured following multiple explosions at the U.S. Steel Clairton plant.

A timelapse video and photos captured by the Breathe Project show the massive plume from a deadly explosion at the U.S. Steel Clairton Coke Works on Monday, Aug. 11, that has now left two people dead two missing,