The Kingdom “seriously undermined” Turkey’s efforts to investigate Mr Khashoggi’s murder at its Istanbul consulate, the inquiry found. The UN investigator has been given access to “chilling and gruesome audio material” obtained by the Turkish intelligence agency, it said.
The UN investigator Agnes Callamard is calling for an official visit to Saudi Arabia.
She said she had “major concerns” about the fairness of proceedings for 11 people facing trial for Mr Khashoggi’s murder.
UN investigators are calling for anyone with information to share it ahead of a June report, which will make recommendations on accountability.
The Washington Post journalist was killed in October with critics claiming Crown Prince Mohammed Bin Salman dispatched a death squad to kill Mr Khashoggi.
Saudi Arabia has denied the Crown Prince ordered Mr Khashoggi’s assassination.
Ms Callamard was reporting on a week-long mission with her team of three experts to Turkey.
A statement from Ms Callamard said: “Woefully inadequate time and access was granted to Turkish investigators to conduct a professional and effective crime-scene examination and search required by international standards for investigation.”
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