Saudi Arabias chief prosecutor will visit Istanbul on Sunday to speak with Turkish authorities as part of the investigation into the murder of journalist Jamal Khashoggi, Turkeys president said Friday.

“They (the Saudis) are sending the chief prosecutor on Sunday to Turkey,” President Recep Tayyip Erdogan said, adding that Ankara had more evidence on the killing.

The 59-year-old Khashoggi, a Washington Post contributor and a critic of Riyadh, was killed on October 2 while visiting the Saudi consulate in Istanbul to obtain paperwork for his marriage to a Turkish woman.

Riyadh acknowledged on Thursday that the murder appeared to have been premeditated, on the basis of evidence supplied by Turkey.

Turkish media have published a series of grisly revelations about the murder.

Erdogan, who has so far stopped short of directly blaming the Saudi government, said Turkey had already shared evidence with countries including Saudi Arabia and added it had even more.