The Guardian reported that King Salman was angered by recent moves his son and heir-apparent made against him. Crown Prince Mohammed bin Salman has been in the spotlight over the war in Yemen and murder last year of journalist Jamal Khashoggi.
The White House declined to comment on the Post report, saying it was an intelligence matter. The Department of State also declined to comment. Saudi Arabia's top diplomat says Crown Prince Mohammed had "absolutely" nothing to do with the killing.