It's been over four years since a deadly chemical plant explosion in Kanawha County killed a worker and injured three others.

Five people were killed and another six are missing after a massive explosion at a chemical plant in eastern China which scattered debris over half a mile from the blast site. Local officials are investigating what caused the explosion but have not yet released their results.

A huge blast rocked a chemical plant in eastern China on Tuesday, sending massive clouds of smoke into the sky and leaving at least 5 dead, officials said.