A Turkish police source told the Middle East Eye that officials believe Khashoggi was "brutally tortured, killed and cut into pieces" while inside the consulate. He left the country previous year for the United States fearing retribution from the kingdom which has recently witnessed widespread crackdown on dissent.
'It goes without saying that his family in the kingdom remain gravely concerned about him, and so are we'.
According to his fiancee Cengiz, Khashoggi had visited the consulate to receive an official document for his marriage.
Mr Khashoggi was a regular contributor to The Post, and colleagues there have said he often expressed concern for his safety because of his writing.
Prior to an interview with BBC Newshour in London, he said that he does not think he would ever be able to go back to Saudi Arabia.
This group is considered to have a connection with the disappearance of Khashoggi.
A former newspaper editor in Saudi Arabia and adviser to its former head of intelligence, Khashoggi left the country a year ago saying he feared retribution for his criticism of Saudi policy in the Yemen war and its crackdown on dissent.
While the Turkish authorities seem confident in their assessment that Khashoggi was indeed murdered, the United States administration, while exercising abundant discretion and caution, has said that they are monitoring the developments in Turkey and are yet, not in a position to confirm the death.
The Washington Post chose to leave a blank space where Khashoggi's column would have been in its Friday edition in support of the missing writer.
Investigators say one of the vehicles, a van with blacked out windows, has become the focus of the investigation, and was briefly tracked to a nearby motorway. "We never experienced this", he said.
Erdoğan of Turkey has left no stone unturned to assert Turkey’s supremacy in the Middle-East
He has also criticised Saudi Arabia's role in Yemen, where Riyadh leads a military coalition fighting alongside the government in its war with Iran-backed rebels.
"At the moment there are certain people who arrived from Saudi Arabia".
Turkish authorities have been given access to search Saudi Arabia's consulate in Istanbul as part of an investigation into a missing dissident journalist.
'If the worst-case scenario is realized, Saudi Arabia will have links to the murder of a vocal critic in a fashion engineered to create just enough doubt for the veneer of implausible-but-sufficient deniability, ' the New York-based Soufan Center said Tuesday.
"We call on the government of Saudi Arabia to support a thorough investigation of Mr. Khashoggi's disappearance and to be transparent about the results of that investigation", Pompeo said in a statement.
Saudi Arabia has denied the reports.
U.S. Republican Senator Lindsey Graham said he and other lawmakers "agree if there was any truth to the allegations of wrongdoing by the Saudi government, it would be devastating to the U.S. -Saudi relationship and there will be a heavy price to be paid - economically and otherwise".
It would also put Britain directly at odds with the crown prince, who is a key United Kingdom ally.
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The issues don't stop there as Arbelaez said safety requirements aren't as strict on limos as they are with traditional cars. Their younger brother, Eric Steenberg, who was not on the trip, told the news station it seemed like "a really bad dream".