A worker at a plastics plant in Kentucky shot and killed five people inside the factory on Wednesday and wounded a sixth before killing himself, police said.
Local media reports said the violence was triggered by a dispute the 25-year-old man had with a supervisor, who was among the dead.
Police in Henderson, Kentucky, said the man who did the shooting entered the Atlantis Plastics plant in Henderson and began firing a handgun.
The shooter, who died of a self-inflicted wound, and one of his victims were pronounced dead inside the plant. Four others were pronounced dead after being taken to hospitals, and a sixth victim is in stable condition at a hospital.
One local media report said most of the victims appeared to have been shot at random and were scattered around the plant.