An investigator for Amazon boss Jeff Bezos says that Saudi Arabia hacked Bezos's phone and accessed his data. The investigator was hired by Bezos to find out how his private messages had been leaked to the National Enquirer tabloid. The investigator has linked the hack to the Washington Post's coverage of the murder of Saudi writer Jamal Khashoggi at the Saudi consulate in Istanbul. Saudi Arabia has not yet commented on the allegation. Bezos owns the Washington Post.