Several US media organisations and business leaders have pulled out a major Saudi investment conference over the disappearance and suspected murder of Jamal Khashoggi, as global pressure for answers about the whereabouts of the prominent journalist mounts on the Gulf kingdom... Amid an ongoing investigation, the Financial Times, Bloomberg, CNN and The New York Times, as well as reporters and editors from the Economist and CNBC said on Friday they were no longer participating in the high-profile Future Investment Initiative conference in the Saudi capital, Riyadh, scheduled to begin on October 23. Dara Khosrowshahi, CEO of ride-sharing company Uber, Bob Bakish, CEO of US mass media conglomerate Viacom and billionaire Steve Case, one of the founders of AOL, also said they were dropping out of this month's event. "I'm very troubled by the reports to date about Jamal Khashoggi," said Khosrowshahi, who was one of the speakers at the conference. "We are following the situation closely, and unless a substantially different set of facts emerges, I won't be attending the FII conference in Riyadh"... The disappearance of Khashoggi, who has been living in self-imposed exile in the United States since fleeing Saudi Arabia last year, has cast a shadow over the three-day conference known as "Davos in the Desert"...