Khashoggi, a US resident and critic of Riyadh's policies, disappeared nearly two weeks ago after entering the Saudi consulate in Istanbul.
In an interview aired Sunday, Trump told CBS' "60 Minutes" that Saudi Arabia would face strong consequences if involved in Khashoggi's disappearance. The kingdom has called the allegations "baseless" but has offered no evidence the writer left the consulate.
Erdogan stressed forming a joint working group to probe the case, said a Turkish presidential source, who spoke on condition of anonymity due to restrictions on talking to media. Turkish officials say they have audio and video recordings that show a Saudi security team killed him.
"There's something really awful and disgusting about that, if that were the case".
"We are going to leave nothing uncovered", Trump told reporters. The index recovered some ground later to close 3.5% down. The writer had been living in self-exile in Virginia for the past year.
There was more pressure from the US which said it is considering boycotting a major worldwide conference in to be held in the Kingdom later this month.
Meanwhile, a string of high-profile cancellations to this month's Saudi investment conference have seen the likes of JP Morgan Chase chief executive Jamie Dimon and Ford Motor Company chairman Bill Ford pull out of the event on Sunday.
Beto O’Rourke Shatters Campaign Records by Raising $38.1 Million
Similarly, Quinnipiac University showed Cruz ahead by 9 points in a poll of 730 likely voters between October 3-9. The candidates have until Monday to report their full third-quarter finances to the Federal Election Commission .
Khashoggi, a Washington Post contributor, vanished after entering the consulate on October 2. At least some of them appear to have high-level connections in the Saudi government. Meanwhile, his fiancee, Cengiz can be seen waiting outside the building and pacing around outside till the evening. Turkish officials say they believe he was murdered there and his body removed. Turkey has called on Saudi officials to provide evidence that he left the consulate.
Mr Hunt, France's Jean-Yves Le Drian and Germany's Heiko Maas said they were treating the incident with "the utmost seriousness".
Sen. Bob Corker, R-Tenn., who as chairman of the Senate Foreign Relations Committee has reviewed the USA intelligence into what happened to Khashoggi, has said, "The likelihood is he was killed on the day he walked into the consulate".
"I sounded to me like maybe there could have been rogue killers". This was reported by Turkish TV channel NTV, citing diplomatic sources. Turkish officials have accused Saudi Arabia of killing the journalist and critic.
"Defending freedom of expression and a free press and ensuring the protection of journalists are key priorities for Germany, the United Kingdom and France", the three ministers said. The Palestinian Authority also put out a statement of support. On Monday, Khalid Al-Falih, the Saudi energy minister, used a speech in India to soothe concerns, pledging his country will continue to be a responsible actor and keep oil markets stable.
Salman emphasised the importance of the Turkey-Saudi relationship and said no-one should be able to "undermine the strength of this relationship", official Saudi media said.
Turkish investigators were on Monday expected to search the Saudi consulate in Istanbul for the first time since journalist Jamal Khashoggi disappeared, after President Recep Tayyip Erdogan and King Salman discussed the case by phone.
Astros Suspected of Cheating In ALCS, ALDS
But the Astros may be the first team to ever get away with the "we were spying to make sure they weren't spying" excuse. Bauer wasn't specific, but Astros pitchers Lance McCullers Jr. and Collin McHugh defended themselves on social media.
The Saudi Embassy in Washington later tweeted a "clarification", thanking countries including the United States "for refraining from jumping to conclusions" over the case.
White House economic adviser Larry Kudlow said on Sunday that Saudi Arabia should take Trump's warning seriously.
The Organisation of Islamic Cooperation issued a statement to praise the Turkish-Saudi joint investigative committee. Saudi Arabia has denied that.
Police officers carrying files and equipment walked through the heavy metal doors of the consulate after sunset, carrying out an extraordinary search of a diplomatic post that is otherwise considered foreign soil under global law as worldwide concern grows for the missing Washington Post columnist.
"It's being investigated, it's being looked at very, very strongly", Trump said.
But while U.S. lawmakers have sparked a human rights investigation that could trigger sanctions on Riyadh, Mr Trump said he is reluctant to cancel multimillion-dollar arms sales to the Gulf state.
"I heard that report, but nobody knows if it's an official report", Trump told reporters, without elaborating. "We have conveyed this message directly to the Saudi authorities", they said.
Maltese club offer Usain Bolt contract to 'spearhead charge to Champions League'
Meanwhile, Bolt has objected to receiving notice of a need to take a drugs test from the Australian Sports Anti-Doping Authority (ASADA).