Turkish police and prosecutors this week searched both the consulate as well as the consul's residence in Istanbul.
'There remains an urgent need for clarification of exactly what happened - beyond the hypotheses that have been raised so far in the Saudi investigation, which need to be backed by facts to be considered credible.
Associated Press quoted Saudi state-run media as saying that King Salman has a proposal to restructure kingdom's intelligence services after the Khashoggi killing.
A statement from the Saudi public prosecutor said a fight broke out between Khashoggi and people who met him in the consulate, leading to his death.
Khashoggi left Saudi Arabia a year ago fearing he'd be arrested, and became a US resident.
SKorean climbers and 4 Nepalese guides missing in storm
The other South Korean climbers who died have been identified as Lee Jaehun, Rim Il-jin, Yoo Youngjik, and Jeong Joon-mo. The group, five South Koreans and their four Nepali guides, were trying to ascend Mount Gurja, a 7,193m (23,599ft) peak.
He also said that they did not know the details of killing, and "where the body is".
What role did Saud al-Qahtani, who has publicly stated that he does not even tweet without the Crown Prince's approval, play and what drove him to carry out this heinous murder? He was accidentally choked after resisting and his body was rolled up in a rug and given to a local person for disposal, the official said. "We need an worldwide investigation and relentless pressure on Saudi Arabia from the Trump administration, if we ever hope to get to the truth".
USA intelligence officials contacted by The Times have declined to comment on the report, which has triggered unease on Capitol Hill, where congressional insiders say questions about the administration's handling of Khashoggi case could lead to a politically charged investigation going forward.
According to Castro, this means there has to be an investigation into the potential sharing of intelligence between the USA and Saudi Arabia.
Turkish officials say the journalist was ambushed by Saudi agents, murdered and dismembered. "I'm not satisfied until we find the answer", he said.
The Saudi foreign minister offered his condolences to the family of Khashoggi and said the death was a "tremendous mistake".
The UK's Brexit Secretary Dominic Raab said the Gulf kingdom's explanation for the death of the dissident journalist is "not credible".
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