Billionaire industrialist David Koch, a major backer of conservative causes and political candidates, has died.
Koch was a driving force behind the conglomerate "Koch Industries " and was one of the world’s richest people.
Charles Koch, David's brother and Koch Industries Inc’s chairman, confirmed the death in a statement.
According to Reuters, Koch had fought a lengthy battle with prostate cancer and stepped down from the company in 2018.
Koch amassed his vast wealth with an ownership stake in Koch Industries, the Kansas-based company he ran with Charles.