The special rapporteurs – Agnès Callamard and David Kaye – said in a joint statement they were "gravely concerned" by evidence they had reviewed about the apparent surveillance of Bezos in what they described as a possible "effort to influence, if not silence, the Washington Post's reporting on Saudi Arabia". The statement was released after the Guardian revealed on Tuesday that Bezos, who is chief executive of Amazon and the world's richest man, appeared to have had his mobile phone "hacked" in 2018 after receiving a message apparently sent from the personal WhatsApp account of Prince Mohammed. In one of the most extraordinary disclosures, the UN rapporteurs said that, according to forensic analysis ,"crown prince sent WhatsApp messages" to Bezos, in November 2018 and February 2019, "in which he allegedly revealed private and confidential information about Mr Bezos' personal life that was not available from public sources". Jeff Bezos Founder and CEO of Amazon, Bezos is the world's richest man.