Turkey has given recordings related to the murder of journalist Jamal Khashoggi to Germany, France and Britain, President Recep Tayyip Erdogan has said.
Mr Khashoggi, a critic of de facto Saudi ruler Prince Mohammed bin Salman, was killed in Saudi Arabia's Istanbul consulate last month in a hit which Mr Erdogan says was ordered at the "highest levels" of the Saudi government.
His killing provoked global outrage but little concrete action by world powers against Saudi Arabia, the world's largest oil exporter and a supporter of Washington's plans to contain Iranian influence across the Middle East.
Speaking as he left Turkey to attend World War One commemorations in France alongside US President Donald Trump and European leaders, Mr Erdogan said for the first time that the three European Union states had heard the recordings.
"We gave the tapes. We gave them to Saudi Arabia, to the United States, Germans, French and British, all of them. They have listened to all the conversations in them. They know," Mr Erdogan said.
CIA director Gina Haspel heard an audio recording of Mr Khashoggi's death when she visited Istanbul, two sources told Reuters last month.
A senior Saudi envoy was also played a recording, a source said.
Mr Erdogan did not give details of the contents of the tapes but two sources with knowledge of the issue have told Reuters that Turkey has several audio recordings.
They include the killing itself and conversations pre-dating the operation which Turkey subsequently uncovered, the sources said.
These had led Ankara to conclude from an early stage that the killing was premeditated, despite Saudi Arabia's initial denials of any knowledge or involvement.
Saudi Arabia's prosecutor Saud al-Mojeb has since said Mr Khashoggi's death was planned in advance, although another Saudi official said Prince Mohammed had no knowledge of the specific operation.
One source familiar with the recordings said that officials who heard them had been horrified by their contents.
One of Prince Mohammed's top aides, Saud al-Qahtani, featured prominently in them throughout, sources said.
Last month two separate intelligence sources told Reuters Mr Qahtani gave orders over Skype to Mr Khashoggi's killers at the consulate.
Saudi state media said King Salman sacked him and four other officials over the murder. There was no indication that any of the suspects were detained.
Mr Erdogan called on Riyadh to identify the killer, saying it must have been a member of a team that arrived in Turkey hours before Mr Khashoggi's disappearance.
"There's no need to distort this issue, they know for certain that the killer, or the killers, is among these 15 people. Saudi Arabia's government can disclose this by making these 15 people talk," Mr Erdogan said.
Mr Erdogan repeated a demand for information on the whereabouts of Mr Khashoggi's body.
An adviser to the president has said the body was cut up for disposal, and Vice President Fuat Oktay has called for an investigation into reports that it was then dissolved in acid.
A Turkish official said last week that Saudi Arabia sent two people, a chemist and a toxicologist, to Istanbul a week after Mr Khashoggi's death to erase evidence, calling it a sign that top Saudi officials knew of the crime.
Saudi Arabia has said members of the team which was sent to Istanbul, and returned shortly after the killing, have been arrested along with three others.
