Secretary of State Mike Pompeo told Saudi Crown Prince Mohammed bin Salman Monday that the US will hold accountable all involved in the killing of dissident Saudi journalist Jamal Khashoggi in a wide-ranging telephone call. Khashoggi, a US resident, was murdered in Saudi Arabia's consulate in Istanbul on October 2 and the crown prince has been accused of orchestrating the killing, which has strained the decades-old alliance between Washington and Riyadh.

"The Secretary emphasised that the United States will hold all of those involved in the killing of Khashoggi accountable, and that Saudi Arabia must do the same," spokeswoman Heather Nauert said in a statement. The top United States diplomat has previously said Khashoggi's killing "violates the norms of international law," and that the US was reviewing sanctions on individuals who have been identified as being involved.