President Donald Trump said that country could face "severe punishment" if Khashoggi, a legal resident of the USA, was killed inside the consulate. Speaking a day after he was last seen, Mohammed, the crown prince, said in an interview with Bloomberg that Turkish authorities were welcome to search inside the consulate building.
However, Turkish officials said Sunday that Saudi Arabia appears to be using delay tactics and is interested only in presenting a facade of cooperation.
US senators called for reactions ranging from boycotting an upcoming economic summit in Riyadh to ending support for Saudi military operations in Yemen.
Economic adviser Larry Kudlow says that when Trump "warns, people should take him at his word".
Worldwide benchmark Brent crude traded at around $81.43 Monday morning, up around 1.2 percent, while U.S. West Texas Intermediate (WTI) stood at $72.12, slightly more than 1 percent higher. Officials in Saudi Arabia did not immediately respond to a request for comment.
Doubts are also growing over whether British Trade Secretary Liam Fox will attend the Riyadh conference, the BBC reported Sunday citing diplomatic sources.
There is mounting global pressure on the Kingdom of Saudi Arabia to explain Khashoggi's disappearance.
Stocks have dropped as much as 9% since Khashoggi disappeared on October 2 after walking into the Saudi consulate in Istanbul.
Thousands without power this morning as Storm Callum hits Ireland overnight
Train cancellations will affect those travelling the Shrewsbury to Aberyswyth line through Mid Wales all weekend. While heavy rain is expected to continue into Saturday, the wind is now forecast to ease off by Friday evening.
On Sunday, the Saudi government hit back against criticism, threatening to "respond with greater action" should economic punishment be imposed.
President Donald Trump has repeatedly blamed OPEC kingpin Saudi Arabia for rising gasoline costs, as prices continue to head in the wrong direction for American consumers with midterms coming up in less than four weeks' time.
Turkish authorities will search the Saudi consulate in Istanbul on Monday afternoon as part of the investigation into Washington Post journalist Jamal Khashoggi's disappearance, Foreign Ministry sources said Monday.
Prodded Saturday to specify what type of "severe punishment" he could impose, Trump demurred. The Japanese technology company's brand is getting slammed because of its links with Saudi Arabia.
Saudi Arabia has been pumping more oil into global markets to make up for a shortfall created by Trump's decision to reimpose sanctions on Iran.
Trump said "nobody knows yet" what happened inside the consulate, "but we'll probably be able to find out" if Salman ordered Khashoggi's murder.
"His voice and his ideas will reverberate, from Turkey to Saudi Arabia and across the world", she wrote.
According to Rubio, the USA rightly condemns corrupt leaders like Vladimir Putin in Russia, Bashar Assad in Syria and Nicolás Maduro in Venezuela and should absolutely condemn the Saudi regime if the allegation is proven true - regardless of whether we are foes or allies.