OUCH: At least 5 are dead and 19 injured after a chemical plant explodes in China, authorities say.

A huge explosion rocked a chemical plant in China ’s eastern Shandong province around noon Tuesday, killing at least five people and injuring 19, according to local emergency management authorities. Another six people were missing.

It was not immediately clear what caused the explosion.

The blast was powerful enough to knock out windows at a warehouse more than two miles (three kilometers) away, according to a video shared by a resident, who declined to give his name out of concern about retaliation.

The resident said his home shook. As he went to the window, he saw a column of smoke from the site more than seven kilometers (4.3 miles) away.

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