Multiple explosions at a US Steel plant near Pittsburgh, Pennsylvania have killed two people and injured 10, according to the company and local authorities.

The blasts at the Clairton Coke Works – part of a sprawling industrial complex along the Monongahela River – took place just before 11am Eastern Time (15:00 GMT) on Monday.

Firefighters battled flames and heavy smoke that billowed out of the plant, which is owned by US Steel, a subsidiary of Nippon Steel.

Initially, two people were reported missing. One person was found and transported to a local hospital, said Allegheny County Police Assistant Superintendent Victor Joseph at an afternoon briefing.

There was no word yet on the possible cause of the explosion.

The investigation into the explosion would be “a time-consuming technica

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