It also said the Spanish government offers their condolences to Khashoggi's family.
The comments from Foreign Minister Adel al-Jubeir were some of the most direct yet from Riyadh, which has given multiple and conflicting accounts about Khashoggi's killing on october 2, first denying his death and later admitting it amid an global outcry.
Although Turkey has so far stopped short of officially blaming Saudi Arabia for the killing, investigators have said they have audio and video evidence which shows Mr Khashoggi, was killed by a team of Saudi agents inside the consulate. "All of this needs to be explained in all its details", Erdogan said.
The crown prince, who observers far and wide believe was behind the kill order, called Khashoggi's son to express condolences, the authorities said.
Asked if there was any question in her mind that Prince Mohammed was involved, Pelosi said, "Everybody has a question". On Sunday, its foreign minister, Adel al-Jubeir, described his death a "murder" and a "tremendous mistake".
Mr Mutreb's name also matches that of a first secretary who once served as a diplomat at the Saudi Embassy in London, according to a 2007 list compiled by the British Foreign Office.
Turkish forensics arrive at an underground auto park cordoned off by Turkish police, on October 22, 2018 in Istanbul, after they found an abandoned vehicle belonging to the Saudi consulate, three weeks after the murder of journalist Jamal Khashoggi in the Saudi consulate.
A auto belonging to the Saudi consulate in Istanbul was found in the Sultangazi district of the city, broadcaster NTV and other local media said on Monday, adding that police would search the vehicle.More news: Trump Calls Stormy Daniels ‘Horseface’ In Tweet Celebrating Court Throwing Out Suit
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Turkish news agency Anadolu Agency reported Sunday that Khashoggi's fiancee, Hatice Cengiz, has been given 24-hour police protection.
He was last seen entering the Saudi consulate in Istanbul earlier this month to sort out divorce papers.
Chancellor Angela Merkel has announced the suspension of German arms sales to Saudi Arabia, saying they can not be undertaken in the current circumstances, a reference to the death of Saudi journalist Jamal Khashoggi who disappeared on October 2 and whom Riyadh has admitted died inside its consulate in Istanbul. Authorities arrested 18 suspects who Jubeir says acted on their own. They also contradicted assertions in Turkish media leaks that Khashoggi was tortured, killed and dismembered inside the consulate, claims the kingdom had rejected as "baseless". "That is unacceptable to the government".
Meanwhile, Maria Adebahr, spokesperson for German's foreign ministry, said on Monday that Saudi Arabia's ambassador was invited to their ministry to convey Berlin's expectations on the matter.
Both were "state-sponsored plots" meant to "send a terrifying public warning", he said.
And on the worldwide stage, he said other actors, including the U.S. Congress and the Europeans, will have deep misgivings about engaging with the crown prince, who is known by his initials MBS. The journalist has relatives still living in Saudi Arabia and three children who hold U.S. citizenship.
"When it is cleared up, we will then see what happens next", Merkel spokesman Steffen Seibert said. President Donald Trump also had talked about possible punishment but said he did not want to halt proposed arms sales to Saudi Arabia because, he maintained, it would harm United States manufacturers. Retno said the visit was scheduled after the Saudi monarch visited Indonesia, the world's most populous Muslim-majority nation, in March previous year.