US President Donald Trump says there could be very severe consequences if it is found Saudi Arabia ordered the alleged killing of Washington Post journalist Jamal Khashoggi.

Mr Trump has reportedly received a briefing on the matter by Secretary of State Mike Pompeo, following an announcement that US Treasury Secretary Steve Mnuchin won’t be attending the Saudi capital for an economic summit.

After winning the presidency in 2016, Saudi Arabia was one of the first country Mr Trump visited, and historically the President has been supportive of the Saudi Government.