Reuters reports The United Nations human rights office voiced deep concern on Tuesday at the “apparent enforced disappearance” and possible murder of Saudi journalist Jamal Khashoggi a week ago. The UN urged the two countries to investigate. Turkish President Tayyip Erdogan on Monday asked Riyadh to prove its claim that Khashoggi had left the Saudi consulate in Istanbul, while Washington urged Saudi Arabia to support an investigation into his disappearance .