It was the first time Trump has weighed in on the situation involving Khashoggi, who was last seen entering the Saudi consulate in Istanbul last Tuesday. Investigators working with the Turkish authorities stated that a team of 15 people arrived at the consulate on the same day as Khashoggi arrived.
David Rohde, executive editor of The New Yorker tweeted out, "The journalist Jamal Khashoggi had said that the Saudi crown prince, Mohammed bin Salman, has 'no tolerance or willingness to accommodate critics'".
"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 have to get an outcome from this investigation as soon as possible", Erdogan said from Budapest. One Turkish official, speaking on condition of anonymity to The Associated Press to discuss an ongoing police investigation, previously described that official as an "autopsy expert".
The Committee to Protect Journalists (CPJ) has been documenting the increasingly harsh treatment of journalists in Saudi Arabia.
Turkish authorities suspect Khashoggi was murdered while inside the building, and President Recep Tayyip Erdoğan says he is now personally involved in the case. the BBC reported. Turkey has supported Qatar amid a yearlong boycott by Bahrain, Egypt, Saudi Arabia and the United Arab Emirates over a political dispute.
"I assure you that the reports that suggest that Jamal Khashoggi went missing in the Consulate in Istanbul or that the Kingdom's authorities have detained him or killed him are absolutely false, and baseless", it notes.
David Kaye, a United Nations special rapporteur on freedom of expression, said the disappearance of Saudi government critic Jamal Khashoggi "puts basically the Turks in the position of having both to maintain a diplomatic relationship and to deal with a real important, high-profile investigation".
Turkish officials have said Khashoggi was killed inside the consulate after entering it on October 2 and that his body was later taken away, without providing evidence.
Saudi Arabia has strenuously denied any involvement in Khashoggi's disappearance.
As a contributor to the Post, Khashoggi has written extensively about Saudi Arabia, including criticizing its war in Yemen, its recent diplomatic spat with Canada and its arrest of women's rights activists after the lifting of a ban on women driving.
His disappearance is likely to further deepen divisions between Turkey and Saudi Arabia.
Khashoggi, a self-exiled writer for The Washington Post, was reportedly visiting the consulate to acquire the papers to prove that he was divorced.
Khashoggi had fled his homeland in September previous year and had been living in self-imposed exile in the United States, where he had applied for U.S. citizenship, Cengiz said.
She said Mr Khashoggi was required to surrender his mobile phone, which is standard practice in some diplomatic missions. She accused Saudi Arabia of "state terrorism" and called on the worldwide community to take action against the kingdom.
Similarly, Prince Mohammed wowed the business world with promises of having an initial public offering of the state oil behemoth Saudi Arabian Oil Co., or Saudi Aramco as it's known, suggesting it would have a $2 trillion valuation.