Turkish prosecutors have requested the extradition from Saudi Arabia of 18 suspects in the killing of journalist Jamal Khashoggi, according to state media.
Mr Khashoggi was killed on October 2 at the Saudi Consulate in Istanbul.
Saudi Arabia had insisted for weeks the journalist walked out of the consulate, before changing their account to say he died in a brawl.
A member of Saudi Crown Prince Mohammed bin Salman’s entourage on foreign trips was seen at the consulate before the Washington Post columnist’s death.
Meanwhile, the crown prince has attended the first meeting of a committee aiming to restructure the kingdom’s intelligence services after the killing of Mr Khashoggi.
The kingdom announced over the weekend that 18 Saudis have been arrested over the killing while four senior intelligence officials and an adviser to the crown prince have been fired.
On Wednesday, the prince called the killing “heinous” and “painful to all Saudis” in his first extensive public remarks on the topic.